NEOKYRU Free Online Tools for Everyone
Explore specialized suites for PDF, image, video, code, and calculation. Free, private, and instant online tools running 100% in your browser with zero cloud uploads.
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App Icon Shape Converter
Convert rounded icons to Google Play 512×512 sharp squares, Apple squircles, or circle crops
Image Padding & Canvas Extender
Add uniform or custom margins around images and logos without scaling or quality loss
AI Vocal Remover & Karaoke Instrumental Maker
Separate vocals and instruments from any song 100% locally in your browser
GIF Frame Extractor & Splitter (PNG ZIP)
Split animated GIFs into individual high-resolution PNG frames and download as ZIP
Reverse GIF Maker & Boomerang Loop Studio
Play animated GIFs backwards or create viral Boomerang loops 100% in-browser
Video Volume Booster (100% to 400% Louder)
Amplify quiet video sound up to 400% with hardware compressor limiter in-browser
Text to Realistic Handwriting Assignment Simulator
Convert typed essays and homework into authentic handwritten ruled notebook pages
AI Image to SVG Vectorizer (Lossless Bitmap Tracer)
Convert PNG, JPG, and logos into clean scalable SVG vector graphics locally in-browser
Lossless EXIF Metadata Scrubber & GPS Location Stripper
Sanitize camera metadata, GPS geo-tags, and serial numbers with zero loss in visual quality
Image Steganography Studio (Hide Secret Text in Photos)
Conceal and extract encrypted secret messages within image pixels using LSB encoding
World Time Meeting Planner & Timezone Overlap Matrix
Schedule international meetings across global timezones with a visual 24-hour availability matrix
International IBAN & BIC/SWIFT Validator
Verify bank account numbers, check digits, and BBAN structures across 80+ countries
Final Grade & Exam Target Score Calculator
Find out exactly what score you need on your final exam to secure an A, B, or C
Reverse Audio Studio (Play Backwards & Export MP3)
Play songs backwards, uncover backmasking effects, and export reversed MP3 / WAV audio
Video Flip & Mirror Studio (Horizontal / Vertical)
Flip horizontal, mirror selfie camera, flip vertical, and rotate videos without watermarks
PDF Booklet & Magazine Imposition Creator
Impose PDF pages 2-up per sheet in exact saddle-stitch folding order for duplex printing
Academic Citation & Bibliography Studio
Generate accurate APA 7, MLA 9, Chicago, Harvard, and BibTeX citations with in-text quotes
Private Ovulation & Fertility Calendar Studio
Calculate your fertile window, peak ovulation day, and estimated conception due date 100% privately
International Footwear & Ring Size Studio
Convert US, UK, EU, Japan, and Korea shoe sizes plus interactive on-screen physical ring sizer
Japanese Zenkaku ⇄ Hankaku Converter (全角半角変換)
Convert between Full-width and Half-width Katakana, Alphanumeric, and Spaces for official Japanese forms
Crypto DCA & Portfolio Accumulation Studio
Simulate recurring Bitcoin, Ethereum, and crypto investments with compounding growth curves and lump-sum comparison
Comprehensive Zakat & Wealth Purification Studio
Calculate your annual Zakat obligation on cash, gold, silver, investments, and business goods with live Nisab benchmarks
Blood Alcohol Content (BAC) & Sobriety Estimator
Estimate your current BAC percentage, legal driving status, and hours until completely sober using the Widmark formula
Dog & Cat Age to Human Years Scientific Studio
Calculate the true biological human age of your dog or cat using modern veterinary epigenetic models
Indian PPF & Gratuity Calculation Studio
Calculate Public Provident Fund (PPF) 15-year tax-free wealth compounding and statutory employee gratuity payouts
UK Stamp Duty Land Tax (SDLT) Studio
Calculate exact Stamp Duty tax on residential property purchases across England and Northern Ireland
Intermittent Fasting & Autophagy Metabolic Studio
Track 16:8, 18:6, OMAD, and extended fasts with cellular autophagy and ketosis timelines
Calculadora de Finiquito y Liquidación Laboral
Calcula tu indemnización, aguinaldo, vacaciones dignas y prima de antigüedad con la Ley Federal del Trabajo
Flight Distance & Flight Time Studio
Calculate great-circle flight distance, estimated flight time, and CO2 emissions between 120+ global airports
eGFR & Kidney Function Clinical Studio
Calculate estimated Glomerular Filtration Rate using race-free 2021 CKD-EPI and Cockcroft-Gault formulas
PGP & Asymmetric Encryption Studio
Generate RSA-2048/4096 keypairs, encrypt and decrypt secret messages 100% in-browser via Web Crypto
Brutto-Netto-Rechner (Gehaltsrechner Deutschland)
Berechne exakt dein monatliches und jährliches Nettogehalt nach Steuerklassen 1–6 und Sozialabgaben
Calculadora de Rescisão de Contrato CLT (Brasil)
Calcule seus direitos trabalhistas, aviso prévio proporcional, férias + 1/3 e multa de 40% do FGTS
Interactive Periodic Table & Molar Mass Studio
Explore all 118 chemical elements with real-time temperature state changes and molecular mass calculator
Australian Tax & Superannuation Studio
Calculate your exact take-home pay with Stage 3 tax cuts, 2% Medicare levy, and Superannuation Guarantee
App Icon & Asset Generator (iOS & Android)
Upload a 1024x1024 icon and generate all Xcode and Android mipmap resolutions into a ready-to-deploy ZIP
Cap Rate & Rental Cash Flow Studio
Analyze commercial and residential rental property returns: Cap Rate, Cash-on-Cash ROI, NOI, and 10-year cash flow
Calcolo del Codice Fiscale & Decoder Inverso
Calcola il Codice Fiscale ufficiale a 16 caratteri per cittadini italiani ed esteri con decodifica inversa
Calculateur de Salaire Brut en Net (France)
Convertissez instantanément votre salaire brut en net mensuel et annuel pour Cadre, Non-Cadre et Fonctionnaire
Canada Paycheck & Provincial Tax Studio
Calculate your net take-home pay per paycheck across Ontario, BC, Alberta, and Quebec with CPP and EI
Calculadora de Sueldo Neto e IRPF (España)
Calcula con exactitud tu sueldo neto mensual en 12 o 14 pagas, retenciones de IRPF y Seguridad Social
Sound Decibel (dB) & SPL Attenuation Studio
Calculate sound drop over distance via inverse-square law, sum multiple decibel sources, and audit hearing safety
UAE & Saudi End of Service Gratuity Calculator (مكافأة نهاية الخدمة)
Official UAE Labour Law (Decree-Law 33/2021) & Saudi Labor Code End of Service Gratuity (EOSG) calculator
Philippine 13th Month Pay & BIR Tax Calculator
Official DOLE PD 851 13th month pay calculator with TRAIN Law ₱90,000 tax-exempt cap and SSS/PhilHealth/Pag-IBIG deductions
Dutch Salary Calculator & 30% Ruling (Bruto Netto Nederland)
Official Netherlands gross-to-net salary calculator with 30% ruling expat tax exemption and 8% Vakantiegeld
Swiss Salary Calculator & Tax Deductions (Lohnrechner Schweiz)
Official Switzerland gross-to-net salary calculator with AHV/IV/EO, ALV, BVG pension, and Cantonal Quellensteuer
BPM to Milliseconds & Reverb Time Calculator
Synchronize delay times, reverb decay & pre-delay, and LFO Hz to song tempo with tap tempo and beat preview
Japan Net Salary & Shakai Hoken Calculator (手取り計算機)
Official Japan take-home pay (手取り) calculator with Health Insurance, Welfare Pension, Resident Tax and Income Tax
Singapore CPF & Take-Home Salary Calculator
Official Singapore CPF employee/employer contribution rates, OA/SA/MA allocation, and IRAS tax calculator
Calculadora de Sueldo Neto México (ISR, IMSS y Aguinaldo)
Calcula tu sueldo neto quincenal y mensual en México con retenciones del SAT (ISR 2024/2025), IMSS y aguinaldo
South Korea Net Salary & 4 Major Insurances (실수령액 계산기)
Official South Korea take-home pay (실수령액) calculator with 4 Major Insurances (4대보험) and non-taxable meals
New Zealand PAYE & KiwiSaver Salary Calculator
Official New Zealand IRD PAYE tax brackets, ACC Earner's Levy (1.60%), KiwiSaver and student loan calculator
Ireland PAYE, USC & PRSI Salary Calculator
Official Ireland net salary calculator with progressive PAYE (20% & 40%), USC rates, PRSI Class A, and Tax Credits
Kalkulator Wynagrodzeń Brutto-Netto (Polska)
Oficjalny kalkulator wynagrodzeń brutto-netto w Polsce ze składkami ZUS (13.71%), NFZ (9%) i ulgą dla młodych
Solar PV System Sizing & Battery Storage Calculator
Calculate solar array capacity (kWp), required roof area, lithium battery storage (kWh & Ah), and carbon offset
Screen PPI, DPI & Retina Viewing Distance Calculator
Calculate pixel density (PPI), dot pitch (mm), Apple Retina distance threshold, and visual acuity (PPD)
Electric Vehicle (EV) Charging Time & Cost Calculator
Calculate charging duration, added driving range, electricity cost, and fuel savings vs gasoline
Lønnskalkulator Norge (Brutto til Netto Lønn)
Offisiell lønnskalkulator for Norge 2024 / 2025: beregn nettolønn, trygdeavgift (7,8%), trinnskatt og fellesskatt
Lönekalkylator Sverige (Räkna ut Lön efter Skatt)
Officiell svensk lönekalkylator 2024 / 2025: kommunalskatt, statlig inkomstskatt (20%), grundavdrag och jobbskatteavdrag
Lønberegner Danmark (Beregn Løn efter Skat)
Dansk nettolønberegner for 2024 / 2025: AM-bidrag (8%), bundskat, kommuneskat, topskat og personfradrag
Brutto-Netto-Rechner Österreich (13. & 14. Gehalt)
Österreichischer Gehaltsrechner 2024 / 2025: Sozialversicherung (18,12%), Lohnsteuertarif und Sonderzahlungen (Urlaubs- & Weihnachtsgeld)
Calculadora de Salario Neto Colombia (Nómina y Prestaciones)
Calculadora laboral oficial de Colombia 2024 / 2025: Salud (4%), Pensión (4%), Auxilio de Transporte y Retención en la Fuente UVT
Calculadora de Sueldo Líquido Chile (Liquidación de Sueldo)
Calcula tu sueldo líquido en Chile 2024 / 2025: AFP por administradora, Salud (Fonasa/Isapre 7%), AFC y escala de Impuesto Único UTM
South Africa Salary & SARS PAYE Tax Calculator
Official South African net salary calculator 2024 / 2025: SARS PAYE brackets (18% to 45%), age rebates, Section 11F pension deductions, Medical Aid credits, and UIF cap
Türkiye Maaş Hesaplama (Brütten Nete 2024 / 2025)
Resmi Türkiye maaş hesaplama 2024 / 2025: SGK işçi primi (%14), işsizlik (%1), kümülatif gelir vergisi dilimleri ve Asgari Ücret Vergi İstisnası (7349)
Kalkulator Gaji Bersih Indonesia (PPh 21 TER 2024 / 2025)
Kalkulator gaji bersih karyawan Indonesia 2024 / 2025: skema PPh 21 TER (A, B, C), iuran BPJS TK (3%), BPJS Kesehatan (1%), dan bonus THR
Calculateur Salaire Brut-Net Belgique (Bruto-Netto Rechner)
Calculateur officiel de salaire net en Belgique 2024 / 2025: ONSS (13,07%), précompte professionnel (25% à 50%), quotité exemptée et 13e mois
Calculadora de Salário Líquido Portugal (IRS e Segurança Social)
Calculadora de salário líquido em Portugal 2024 / 2025: novas tabelas de retenção na fonte de IRS, Segurança Social (11%) e subsídio de refeição
Calculadora de Sueldo Neto Argentina (Recibo de Sueldo y Ganancias)
Calculadora de sueldo de bolsillo en Argentina 2024 / 2025: aportes de ley (17%), nuevo Impuesto a las Ganancias 4ta categoría y Aguinaldo (SAC)
Malaysia Salary & PCB Tax Calculator (Kalkulator Gaji Bersih)
Official Malaysia net pay calculator 2024 / 2025: EPF/KWSP (11%), SOCSO/PERKESO, EIS/SIP with new RM 6k ceiling, and LHDN PCB tax
CBM & Freight Volumetric Weight Calculator (Air & Ocean)
Calculate cubic meters (CBM), cubic feet (CFT), dimensional air freight weight (1:6000 & 1:5000), ocean LCL revenue tons, and container fill percentage
Amazon FBA Fee & E-commerce Profit Margin Calculator
Calculate Amazon FBA referral fees, pick & pack fulfillment fees, monthly storage, PPC advertising cost, break-even price, and net profit margin
Standard Deviation, Variance & Z-Score Calculator
Calculate sample and population standard deviation (s / σ), variance (s² / σ²), standard error of the mean (SEM), and normal distribution Z-scores
MAC Address Lookup & OUI Vendor Inspector
Identify NIC hardware manufacturers from IEEE OUIs, format MAC addresses across Unix/Windows/Cisco, and generate IPv6 modified EUI-64 link-local addresses
Taiwan Salary & Tax Calculator (台灣薪資所得稅計算機)
Calculate Taiwan net salary, labor insurance (勞保 2.2%), national health insurance (健保 2.11%), voluntary pension (0-6%), and 5-tier progressive individual income tax
Hong Kong Salary Tax & MPF Calculator (香港薪俸稅及強積金計算機)
Calculate HK net take-home salary, mandatory MPF (5% capped at HK$1,500/mo), Inland Revenue Department progressive tax vs 15% standard rate, and budget tax relief
Tính Lương Gross Sang Net Chuẩn 2025 (Vietnam Salary Calculator)
Công cụ tính lương Gross sang Net chuẩn quy định BHXH (8%), BHYT (1.5%), BHTN (1%), giảm trừ gia cảnh và 7 bậc thuế TNCN mới nhất theo Nghị định 73/2024
Thailand Salary & PIT Calculator (คำนวณเงินเดือนสุทธิและภาษี)
Calculate Thailand net take-home salary, Social Security Fund (SSF 5% max 750 THB), Provident Fund (PVD), and 8 Revenue Department progressive PIT tax tiers
Pakistan Salary Tax Calculator (FBR Finance Act 2024-2025)
Calculate monthly take-home salary, FBR income tax slabs for salaried individuals, EOBI contributions, and 10% super-rich surcharge under Finance Act 2024
Nigeria PAYE & Salary Tax Calculator (Lagos & All 36 States)
Calculate Nigeria net salary, 8% statutory pension, Consolidated Relief Allowance (CRA), National Housing Fund (NHF), and Sixth Schedule graduated PAYE tax bands
Palkkalaskuri Suomi (Finland Net Salary & Tax Calculator)
Laske käteen jäävä nettopalkka Suomessa: TyEL-eläkemaksu (7.15%), työttömyysvakuutus (0.79%), kunnallisvero, ja valtion tuloveroasteikko 2024 / 2025
Egypt Salary & Income Tax Calculator (حاسبة المرتبات والضرائب المصرية)
احسب صافي المرتب في مصر بعد خصم التأمينات الاجتماعية (11%)، ضريبة كسب العمل المتدرجة، والإعفاء الشخصي الجديد (20 ألف جنيه)
Bangladesh Salary & Income Tax Calculator (বাংলাদেশ বেতন ও আয়কর ক্যালকুলেটর)
Calculate net take-home salary in Bangladesh with NBR progressive tax slabs (5%-25%), female/senior exemptions, City Corporation minimum tax, and PF
Kenya PAYE & Net Salary Calculator (KRA Mshahara Calculator)
Calculate Kenyan net take-home pay with KRA PAYE tax bands (10%-35%), SHIF (2.75%), NSSF Tier I & II, Affordable Housing Levy (1.5%), and Personal Relief
Israel Net Salary Calculator (מחשבון שכר נטו ומס הכנסה)
Calculate Israeli take-home pay with Mas Hachnasah tax brackets (10%-50%), Bituach Leumi, Health Tax, Nekudot Zikuy credit points, and Keren Hishtalmut
Czech Republic Net Salary Calculator (Kalkulačka čisté mzdy)
Calculate Czech net wage from gross with Sociální pojištění (7.1%), Zdravotní pojištění (4.5%), progressive PIT (15%/23%), Sleva na poplatníka, and child tax credits
Romania Net Salary Calculator (Calculator Salariu Net)
Calculate Romanian net salary from gross with CAS pension (25%), CASS health (10%), income tax (10%), personal deduction, and IT exemption up to 10k RON
Interactive LaTeX Equation Editor & Math Palette
Create, edit, and render scientific formulas with visual symbol palettes, live KaTeX typesetting, MathML export, and high-resolution PNG downloads
Audio Pitch, Equalizer & Tempo Studio
Fine-tune sound with a 10-band graphic equalizer, pitch shifter, tempo scaler, volume booster, and lossless WAV export 100% in-browser
IEEE 754 Floating-Point & Binary Studio
Inspect and convert 32-bit single and 64-bit double precision floats with interactive bit flippers, hex values, and step-by-step mathematical derivation
Greece Net Salary & EFKA Calculator (Υπολογισμός Καθαρού Μισθού & ΕΦΚΑ)
Calculate Greek net salary from gross with EFKA social security (13.87%), progressive income tax (9%-44%), tax-free allowances for children, and 14 vs 12 payment periods
Hungary Net Salary Calculator (Magyar Bérkalkulátor 2024/2025)
Calculate Hungarian net wage from gross with TB social security (18.5%), flat SZJA (15%), under-25 tax exemption, and family tax allowances
Ukraine Salary & Military Tax Calculator (Калькулятор Зарплати України)
Calculate Ukrainian net salary from gross with PIT (18%), Military Tax (1.5%/5%), Diia City IT regime, and employer ESV (22%)
Peru Net Salary & 5ta Categoría Calculator (Calculadora de Sueldo Neto)
Calculate Peruvian net salary with AFP (Integra, Prima, Profuturo, Habitat) vs ONP (13%), SUNAT 5ta categoría (7 UIT deduction), and 14 payments with Gratificaciones
JWT Debugger & Security Token Inspector
Decode, inspect claims, verify HMAC-SHA256 signatures, and check token expiry 100% client-side with native Web Crypto API and zero server uploads
Cron Expression Schedule Visualizer & Guru
Translate 5-field cron syntax into plain English, inspect individual time parameters, and preview the next 8 execution timestamps in your local timezone
CSS Smooth Shadow & Glassmorphism Studio
Craft silky multi-layer realistic box shadows and frosted glass backdrop-filter surfaces with live canvas preview and instant CSS / Tailwind export
EXIF Metadata & GPS Privacy Cleaner
Inspect hidden camera metadata and GPS coordinates inside your photos, then strip all personal tracking tags 100% client-side before sharing online
Morocco Net Salary & CNSS Calculator (Calculateur Salaire Net Maroc - حاسبة الأجور)
Calculez le salaire net au Maroc avec les cotisations CNSS (4,48%), l'AMO (2,26%), les frais professionnels (35%) et le barème progressif de l'IGR
Bulgaria Net Salary & Flat Tax Calculator (Калкулатор за Заплата: Бруто - Нето)
Calculate Bulgarian net salary from gross with DOO social insurance (13.78%), the famous 10% flat tax, and child tax relief
Slovakia Net Salary Calculator (Kalkulačka čistej mzdy Slovensko)
Calculate Slovak net wage from gross with health insurance (4%), social security (9.4%), NČZD tax-free allowance (470.54 €), and child tax bonus
Ecuador Net Salary & IESS Calculator (Calculadora de Sueldo Neto Ecuador)
Calculate Ecuadorian net salary with IESS personal contribution (9.45%), SRI income tax with family expense rebates, décimo tercero, and décimo cuarto
Bcrypt Password Hash Generator & Verifier Studio
Generate secure Blowfish Bcrypt password hashes ($2b$, $2a$, $2y$) with customizable work cost factor (4-14) and verify hashes 100% client-side
Audio BPM Tap Tempo & Online Metronome Studio
Find the exact BPM of any song with rolling tap tempo, practicing with an interactive Web Audio metronome across multiple time signatures
DNS-over-HTTPS (DoH) Record Inspector
Resolve and inspect domain DNS records (A, AAAA, MX, TXT, CNAME, NS, SOA) directly from your browser using Cloudflare and Google DoH APIs
Color Blindness & Daltonism Vision Simulator
Test and visualize designs, charts, and photos as seen by individuals with Deuteranopia, Protanopia, Tritanopia, and Achromatopsia 100% in-browser
Kazakhstan Net Salary & Payroll Studio (Калькулятор зарплаты Казахстан - Жалақы калькуляторы)
Рассчитайте чистую зарплату на руки в Казахстане с учетом ОПВ (10%), ВОСМС (2%), ИПН (10%), вычета 14 МРП и налогов работодателя
Ghana PAYE Salary & SSNIT Tax Studio
Calculate net take-home salary in Ghana under GRA progressive PAYE tax brackets and SSNIT Tier 1 & 2 pension contributions
Croatia Net Salary Calculator (Kalkulator Plaće RH - Bruto u Neto)
Izračunajte neto plaću u Hrvatskoj s Mirovinskim (I. i II. stup 20%), osobnim odbitkom 560 €, gradskim poreznim stopama i zdravstvenim osiguranjem
Sri Lanka Salary Calculator (APIT, EPF & ETF)
Compute net in-hand salary in Sri Lanka with Inland Revenue APIT tax slabs (6% to 36%), EPF (8% & 12%), and ETF (3%)
IP Subnet & CIDR Network Calculator Studio
Compute network addresses, usable host ranges, broadcast IPs, wildcard masks, and binary layouts 100% in-browser
RegEx Visualizer & Railroad Diagram Studio
Deconstruct regular expressions into interactive visual railway state diagrams and test matches with zero server lag
Markdown Table Formatter & CSV Converter Studio
Auto-align pipes, edit spreadsheet tables, and convert between Markdown, HTML, CSV, and JSON 100% in-browser
CSS Cubic-Bezier Curve & Animation Studio
Design custom cubic-bezier easing curves, simulate spring physics, and generate production CSS transitions & keyframes
Algeria Net Salary & IRG Tax Studio (Calculateur Salaire Net Algérie - حاسبة الأجور الجزائر)
Calculez le salaire net en Algérie avec la cotisation CNAS (9%), le barème progressif de l'IRG et l'abattement de 40%
Uruguay Net Salary & IRPF Studio (Calculadora Sueldo Líquido)
Calcula el sueldo líquido en mano en Uruguay con aportes jubilatorios BPS (15%), seguro de salud FONASA y franjas de IRPF
Serbia Net Salary Calculator (Kalkulator Plate Srbija - Bruto u Neto)
Izračunajte neto platu u Srbiji sa doprinosima za PIO (14%), zdravstvo (5.15%), neoporezivim iznosom od 25.000 RSD i porezom od 10%
GCC End of Service Gratuity & Indemnity Studio (Kuwait, Qatar, Bahrain, Oman)
Calculate End of Service Benefits (EOSB) and labor indemnity across Kuwait, Qatar, Bahrain, and Oman
Subtitle SRT & VTT Time Shifter Studio
Shift movie and video subtitles forwards or backwards with millisecond precision and convert between SRT and VTT
PDF Page Numberer & Bates Stamping Studio
Add sequential legal Bates stamps or custom page numbering to PDF documents 100% in-browser
SVG Multi-Resolution Asset Generator Studio
Convert vector SVGs into complete multi-resolution icon packs (16x16 to 512x512) for Web, iOS, and Android
HTTP Header & Security Inspector Studio
Audit HTTP response headers against OWASP security standards and generate hardened server configurations
Ethiopia Salary & Income Tax Studio (የኢትዮጵያ የደሞዝ እና ግብር ማስያ - Proclamation 979/2016)
Calculate net take-home salary in Ethiopia with 7% employee pension, 11% employer pension, and Proclamation 979/2016 tax brackets
Nepal Salary & SSF Income Tax Studio (नेपाल तलब तथा सामाजिक सुरक्षा कर क्याल्कुलेटर)
Calculate net take-home salary in Nepal with Social Security Fund (SSF 11%/20%), married vs individual tax slabs, and CIT/EPF
Panama Net Salary & DGI Tax Studio (Calculadora Salario Neto Panamá - Seguro Social e ISR)
Calcule el salario neto en Panamá con Seguro Social CSS (9.75%), Seguro Educativo (1.25%) e Impuesto sobre la Renta DGI
Costa Rica Net Salary & CCSS Tax Studio (Calculadora Salario Neto Costa Rica - CCSS y Renta)
Calcule el salario neto en Costa Rica con cargas sociales de la CCSS (10.67%) e Impuesto sobre la Renta progresivo
Private HAR Waterfall Analyzer & HTTP Archive Inspector
Analyze HTTP Archive (.har) files with interactive waterfall timelines, TTFB metrics, and client-side token redacting
RFC 9562 UUIDv7 & ULID Sortable ID Generator & Timestamp Decoder
Generate chronologically sortable UUIDv7 and Crockford Base32 ULIDs with millisecond timestamp decoding and WebCrypto security
Multi-Dialect SQL Beautifier, Formatter & Minifier Studio
Format, beautify, and minify SQL queries across PostgreSQL, MySQL, SQLite, T-SQL, Snowflake, and BigQuery dialects
Universal JSON to TypeScript, Pydantic, Go & Rust Type Engine
Convert JSON payloads into TypeScript interfaces, Python Pydantic V2 models, Go structs, and Rust Serde types
United States 50-State Take-Home Paycheck & Tax Studio (IRS W-4 & FICA)
Calculate US take-home pay with Federal IRS tax brackets, FICA Social Security cap, Medicare surtax, and all 50 states
UK Take Home Pay & HMRC PAYE Tax Studio (2024–2026 - £100k Taper & NIC 8%)
Calculate UK take-home salary with HMRC PAYE income tax, 8% Class 1 National Insurance, £100k taper, and Student Loan Plans 1-5
Deutschland Brutto-Netto-Rechner & Gehaltsrechner (Steuerklasse I–VI & Sozialabgaben)
Berechnen Sie Ihr Nettogehalt in Deutschland mit Steuerklasse 1 bis 6, Rentenversicherung (9,3%), Krankenversicherung, PV und Solidaritätszuschlag
India Income Tax & In-Hand Salary Studio (Budget 2024–2026 Old vs New Regime)
Calculate in-hand salary in India with Budget 2024 New Regime (₹75,000 standard deduction, 87A rebate) vs Old Regime (80C, 80D, HRA)
France - Calculateur Salaire Brut en Net & Prélèvement à la Source (Cadre & Non-Cadre)
Calculez le salaire net en France avec cotisations salariales Urssaf (~22% non-cadre / ~25% cadre) et Prélèvement à la source (PAS)
Brasil - Calculadora de Salário Líquido CLT (Tabela INSS Progressivo & IRPF 2024–2026)
Calcule o salário líquido na CLT com tabela progressiva do INSS (até R$ 7.786,02), IRPF, dependentes e depósito do FGTS
España - Calculadora de Sueldo Neto & Retenciones IRPF (Seguridad Social & CC.AA.)
Calcule su sueldo neto en España con cotizaciones a la Seguridad Social (4,70% comunes, desempleo, MEI) e IRPF por Comunidad Autónoma
Italia - Calcolo Stipendio Netto & Nuova IRPEF a 3 Scaglioni (Taglio Cuneo Fiscale & INPS)
Calcola lo stipendio netto mensile in Italia con la nuova IRPEF a 3 scaglioni (23%, 35%, 43%), taglio del cuneo fiscale INPS e TFR
Uzbekistan Salary & NDFL Tax Studio (Ish Haqi & Soliqlar)
Hisoblang sof ish haqi O'zbekistonda: JShODS (NDFL 12%), INPS jamg'arib boriladigan pensiya (0.1%), va ijtimoiy soliq (12%)
Tanzania Salary & TRA PAYE Studio (NSSF & WCF)
Compute Tanzania net take-home salary with TRA PAYE monthly progressive slabs (0% to 30%), NSSF pension (10%), and WCF
Uganda Salary & URA PAYE Studio (NSSF & LST)
Calculate Uganda net salary with Uganda Revenue Authority PAYE progressive tax brackets (0% to 40%), NSSF (5%), and Local Service Tax
República Dominicana - Calculadora Sueldo Neto TSS & DGII
Calcula el salario neto en República Dominicana con retenciones TSS (AFP 2.87%, SFS 3.04%), escalas ISR DGII y Salario de Navidad
Guatemala - Calculadora Salario Líquido IGSS & SAT
Calcula tu sueldo líquido en Guatemala: cuota laboral IGSS (4.83%), Bono Incentivo Q 250, retención ISR SAT, Bono 14 y Aguinaldo
Tunisie - Calculateur Salaire Net CNSS & IRPP (Barème Fiscal)
Calculez le salaire net en Tunisie avec cotisations CNSS (9.18%), barème progressif IRPP (0% à 35%), CSS 1% et déductions chef de famille
Azərbaycan Əmək Haqqı Kalkulyatoru (Gəlir Vergisi, DSMF & İTS)
Hesabla xalis əmək haqqı: Qeyri-neft sektoru 8,000 AZN güzəşti, DSMF pensiya (3%/10%), icbari tibbi sığorta (İTS 2%) və işsizlik
Jordan Salary & SSC Tax Studio (حاسبة الراتب الصافي الأردن)
احسب الراتب الصافي في الأردن مع اشتراكات الضمان الاجتماعي (SSC 7.5%) وضريبة الدخل مع الإعفاءات الشخصية والعائلية
JSON Diff & Semantic Tree Comparator Studio
Visual side-by-side JSON semantic tree diff, structural comparisons, added/removed/mutated keys detector with 100% client-side privacy
SVG Path Optimizer & Visualizer Studio
Inspect, preview, minify, and strip redundant coordinate decimals from raw SVG path data with sub-pixel precision control
Web Audio Noise & Binaural Synthesizer Studio
Continuous in-browser DSP sound generator: Brownian (1/f²), Pink (1/f), White noise, 432 Hz sleep drones, and Delta/Theta binaural beats
Bcrypt Hash Generator & Work Factor Benchmark Studio
Generate RFC-compliant Bcrypt hashes, verify work factors (cost 6-14), inspect salt/digest components, and benchmark client CPU hashing power
中国五险一金及个人所得税计算器 (China Tax & Social Insurance)
全国主要城市（北上广深）养老、医疗、失业保险、住房公积金比例，5000元起征点与七级累进个税
人民币大写金额转换器 (RMB Financial Numeral Converter)
秒级转换阿拉伯数字为银行支票、发票凭证与合同法定大写汉字（壹、贰、叁、肆、元、角、分、整）
법정 퇴직금 계산기 (Korea Severance Pay / Toejikgeum Calculator)
근로기준법 제34조 법정 퇴직금 산식: 1일 평균임금 × 30일 × (재직일수 / 365) 및 퇴직소득세 자동 산출
연차수당 계산기 (Korea Annual Leave Allowance / Yeon-cha Sudang)
근로기준법 제60조 미사용 연차유급휴가 수당: 월 통상임금 및 소정근로시간(209시간) 기준 통상시급 계산
ふるさと納税 限度額計算機 (Japan Furusato Nozei Limit Studio)
総務省法定計算式に準拠：年収と家族構成から実質自己負担2,000円で寄附できる上限額と住民税控除を試算
和暦・西暦・年齢早見表変換器 (Japan Wareki to Seireki Studio)
令和・平成・昭和・大正・明治と西暦の双方向変換、満年齢、干支、履歴書用入学・卒業年度早見表
Калькулятор расчета отпускных онлайн (Russian Vacation Pay Studio)
Расчет отпускных по ст. 139 ТК РФ и Положению № 922: среднедневной заработок с коэффициентом 29.3 и вычет НДФЛ 13%
Калькулятор больничного листа и декретных (Russia Sick Leave Studio)
Расчет пособия по временной нетрудоспособности по закону № 255-ФЗ: стаж (60%/80%/100%), лимиты СФР и 3 дня за счет работодателя
Concrete Slab, Footing & Bag Estimator Studio
Calculate concrete volume in cubic yards, cubic meters, pre-mixed 80lb/60lb/25kg bags, rebar grid, and ready-mix truck costs
HVAC BTU Heating & Cooling Load Sizing Studio
Manual J residential thermal load estimator: room volume, climate zone, insulation R-values, window exposure, and AC tonnage
Coast FIRE Financial Independence Visualizer Studio
Calculate your Coast FIRE milestone: the exact portfolio amount today to retire securely with 0% future contributions
EXIF Metadata Inspector & Privacy Stripper Studio
100% in-browser photo privacy sanitizer: inspect and strip GPS location, camera serial numbers, and device timestamps
Image Compressor
Compress JPG, PNG, and WebP images locally with custom quality control
Image Resizer
Resize image dimensions by pixels or percentage with aspect ratio lock
Image Format Converter
Convert images between JPG, PNG, WebP, and other formats instantly
Image Cropper
Crop and frame photos with freeform or standard aspect ratios
Image Metadata & Dimension Inspector
Inspect image dimensions, color space, file size, and EXIF metadata
Image Color Palette Extractor
Extract dominant color palettes and HEX codes from any photo
Social Media Image Resizer
Resize photos for YouTube, Instagram, Twitter, Facebook, and LinkedIn
PDF Merger
Merge multiple PDF documents into a single organized PDF file
PDF Splitter & Page Extractor
Extract specific pages or split a PDF into separate files
Image to PDF Converter
Convert JPG, PNG, and WebP images into a single formatted PDF document
PDF Page Rotator & Organizer
Rotate sideways or upside-down PDF pages by 90, 180, or 270 degrees
PDF Page Numberer
Add page numbers, headers, and footers to PDF pages with customizable positioning
PDF Watermark Tool
Stamp custom text watermarks, confidentiality markings, and stamps across PDF pages
PDF Page Remover
Delete unwanted or sensitive pages from any PDF document and export a clean version
PDF Metadata & Document Info Editor
Inspect, edit, or wipe Title, Author, Subject, Keywords, and Creator metadata from PDFs
PDF to Text Extractor
Extract readable plain text streams and copyable content from PDF documents
Text to PDF Converter
Convert rich formatted text, notes, bold headings, and colored text into high-fidelity PDF documents
Word & Character Counter
Real-time word, character, sentence, paragraph count, and reading time
Text Case Converter
Convert text between UPPERCASE, lowercase, Title Case, camelCase, and more
Duplicate Line Remover & Sorter
Remove duplicate lines, sort alphabetically, and clean text lists
JSON Formatter, Validator & Minifier
Format, validate, beautify, and minify JSON with real-time error detection
Base64 Encoder & Decoder
Encode text and files to Base64 or decode Base64 strings to plain text
JWT Decoder & Inspector
Decode and inspect JSON Web Tokens locally with expiration warnings
URL Encoder & Decoder
Encode special characters for URL query parameters or decode percent-encoded URLs
Cryptographic Hash Generator
Generate SHA-256, SHA-512, SHA-1, and MD5 cryptographic hashes from text
Color Format Converter (HEX, RGB, HSL, CMYK)
Convert colors between HEX, RGB, HSL, and CMYK with live preview and contrast rating
Number Base Converter (Binary, Decimal, Hex, Octal)
Convert numbers between Binary, Decimal, Hexadecimal, and Octal bases
Date Difference & Duration Calculator
Calculate the duration and number of days and business days between two dates
Universal Unit Converter
Convert measurements for Length, Weight, Temperature, Data Storage, Speed & Area
Percentage & Margin Calculator
Calculate percentages, percentage change, profit margins, and markups instantly
Tip & Bill Split Calculator
Calculate restaurant tips, custom percentages, and split bills fairly among friends
Loan & EMI Estimator
Calculate monthly loan EMI payments, total interest, and yearly amortization schedule
Custom QR Code Generator
Create custom QR codes for URLs, Wi-Fi, text, and vCards with instant SVG/PNG download
Barcode Generator (CODE128, EAN, UPC)
Generate standard scannable barcodes in CODE128, EAN-13, UPC, and CODE39 formats
UUID / GUID Generator (v4)
Generate cryptographically random UUID v4 identifiers in single or bulk batches
UTM Campaign Link Builder
Build trackable Google Analytics UTM URLs for marketing campaigns and social media
Aspect Ratio Calculator
Calculate proportional dimensions, simplified ratios (16:9, 4:3, 9:16), and scaling
Subtitle SRT Time Shifter & Sync Helper
Shift all subtitle timestamps forward or backward to fix video audio desync
Emoji Copy & Paste Library
Instant search and 1-click copy for 3,900+ emojis, unicode symbols, kaomoji, and special characters
Special Characters & Unicode Symbols Library
Copy special characters, arrows, currency, Greek letters, math symbols, and unicode text
Kaomoji, Emoticons & Aesthetic Text Symbols
Japanese kaomoji emoticons, aesthetic bio borders, and trending emoji combos for creators
File Checksum & Integrity Verifier
Calculate and verify SHA-256, SHA-512, and MD5 checksums of any local file
MIME Type & File Extension Lookup
Look up MIME types, HTTP Content-Types, and file extension associations
CSV Viewer & Table Editor
View, sort, filter, and edit CSV and TSV spreadsheets directly in your browser
Markdown Live Editor & Previewer
Write and preview GitHub-Flavored Markdown with instant side-by-side HTML rendering
Text to PDF Converter
Convert plain text, notes, and code into clean, formatted paginated PDF documents
Markdown to HTML Converter
Compile Markdown syntax into clean, standard semantic HTML markup
Text File Merger
Merge multiple text, CSV, markdown, and log files into a single unified document
Text File Splitter
Split large text and log files into multiple downloadable parts by line count
Audio Metadata & Properties Inspector
Inspect duration, sample rate, channels, bitrate, and playback for audio files
Video Metadata & Resolution Checker
Inspect native resolution, aspect ratio, duration, bitrate, and keyframe snapshots
Video Bitrate & File Size Calculator
Calculate required video bitrate for Discord 8MB/25MB limits, Email, and Web streaming
Video FPS & Frame Time Calculator
Calculate exact frame render time, total frame count, and SMPTE timecodes
BMI & Ideal Weight Calculator
Calculate Body Mass Index, health category, ideal weight range, and BMI prime
Regular Expression (Regex) Tester
Test, debug, and validate JavaScript regular expressions with real-time match highlighting
HTML & CSS Minifier
Compress and minify HTML and CSS stylesheets to reduce bandwidth and speed up page loading
Text Cleaner & Whitespace Sanitizer
Remove extra spaces, empty lines, HTML tags, emojis, and special characters from text
Meta Tag & Open Graph Generator
Generate Google SEO meta tags, Open Graph (Facebook/LinkedIn), and Twitter Cards with live preview
JSON to CSV & CSV to JSON Converter
Convert structured JSON arrays to CSV spreadsheets and CSV files to JSON objects bi-directionally
Instant Username & Social Handle Checker
Check username and brand handle availability across 60+ social, dev, video, and gaming platforms simultaneously
PDF Password Protect & Encrypt
Encrypt any PDF document with AES-256 password protection and custom permissions in-browser
PDF Password Remover & Decrypt
Remove passwords, permissions, and security restrictions from any PDF document client-side
Free Online PDF Editor & Annotator
Add text, highlighters, digital images, and shapes directly onto any PDF document 100% in-browser
Online PDF Reader & Full-Text Search
Read books, articles, reports, and search text effortlessly with dark mode and eye protection
Create PDF Document Online
Create blank PDF documents with custom headings, bullet lists, and paragraphs in seconds
Scan to PDF
Scan physical paper documents, receipts, IDs, and multi-page notes using your webcam or phone camera
PDF to PDF/A
Convert standard PDF documents into ISO 19005 compliant PDF/A for long-term legal and governmental archiving
PDF to Markdown
Extract structured text, headings, bullet lists, and tables from PDF into GitHub Flavored Markdown
Translate PDF
Translate PDF documents into Spanish, French, German, Hindi, Chinese, and 15+ languages with side-by-side bilingual view
PDF Image Extractor to ZIP
Extract embedded photos and graphic assets from PDF pages and download as a ZIP archive
PDF Dark Mode & Color Inverter
Invert PDF document colors to high-contrast night mode for comfortable reading and printing
SVG to PNG, JPG & WEBP Converter
Convert vector SVG files into high-resolution PNG, JPG, and WEBP raster images at custom scaling (1x to 8x)
WCAG Color Contrast & Accessibility Checker
Calculate color contrast ratios and test WCAG 2.1 AA/AAA compliance for text, UI components, and icons
PDF Page Organizer & Reorder
Reorder, move, duplicate, and delete pages in your PDF visually
PDF Grayscale / B&W Converter
Convert colored PDF documents to monochrome grayscale to save printer ink
PDF Page Margin & Crop Tool
Trim white margins, headers, or footers across all PDF pages
PDF to Image Converter (PNG/JPG ZIP)
Export all PDF pages as high-resolution PNG or JPG images bundled in a ZIP
PDF N-Up Handout Maker (2-Up / 4-Up)
Combine 2 or 4 pages per sheet for printing lecture notes and handouts
Image EXIF & Metadata Privacy Stripper
Wipe GPS location coordinates, camera serials, and timestamps from photos
Image Color Inverter & Negative Effect
Invert image colors to create negative film effects or high-contrast graphics
Image Blur & Privacy Censor Tool
Blur, pixelate, or black out sensitive faces, license plates, and credit cards
Image Watermark Adder
Add custom text watermarks, diagonal tiling, and copyright seals to photos
Image Splitter & Grid Slicer
Slice images into 3x3 grids, carousel strips, or custom NxM tiles for social media
Favicon & App Icon Package Generator
Generate 16x16, 32x32, Apple Touch, and 192x192/512x512 PWA icons in a ZIP
SQL Query Formatter & Beautifier
Format, indent, and clean complex SQL queries with keyword capitalization
Cron Expression Parser & Explainer
Translate 5-part cron expressions into plain English schedules and runtimes
HTML Entity Encoder & Decoder
Encode special characters to HTML entities or decode entities back to readable text
UUID / GUID Batch Generator
Generate 1 to 1000 cryptographically secure UUID v4 identifiers with custom formatting
HMAC Cryptographic Signature Generator
Compute HMAC-SHA256, HMAC-SHA512, and HMAC-SHA1 signatures using Web Crypto
CSS Box Shadow & Glow Generator
Interactive multi-layer box shadow and neon glow builder with live preview
CSS Glassmorphism & Frosted Glass Maker
Interactive frosted glass card builder with background blur and border sheen
Random Name & Choice Decision Picker
Shuffle lists, pick random winners from giveaways, and make instant decisions
Text to Binary, Hex, Decimal & Base64 Converter
Convert text instantly to Binary (Base-2), Hex (Base-16), Decimal, and Base64
Smart Title Capitalizer & Multi-Case Converter
Format headlines using AP Stylebook, Chicago Manual, camelCase, snake_case, and more
Keyword Density & N-Gram SEO Analyzer
Analyze word count, reading time, and top 1-word, 2-word, and 3-word keyword density
Text Line Sorter & Alphabetizer
Sort lists alphabetically, by length, numerically, or shuffle with duplicate removal
Trip Fuel Cost & Mileage Calculator
Calculate total fuel expense, fuel volume needed, and cost per passenger for road trips
Salary & Hourly Wage Converter
Convert between hourly wage, daily pay, weekly rate, monthly salary, and annual gross
Time Zone Meeting Planner & World Clock
Compare international time zones and identify overlapping business working hours
PDF Flatten & Print Lock
Flatten interactive form fields, checkboxes, and annotations into static print vectors
PDF Custom Page Range Extractor
Extract specific pages or page ranges (e.g. 1, 3-5, 8) into a new standalone PDF
PDF Page Size Converter (A4 / Letter / Legal)
Rescale PDF pages to international standard paper sizes (A4, A3, US Letter, US Legal)
Image to Base64 & Data URI Generator
Convert PNG, JPG, SVG, WebP into Base64 Data URIs, HTML <img>, and CSS background code
Photo Filter & Canvas Enhancer
Adjust photo brightness, contrast, saturation, sepia, vintage duotone, and blur online
CSS Advanced Border Radius / Blob Generator
Interactive 8-value border-radius builder for organic blob, pill, and badge shapes
Markdown Table Builder & Formatter
Visual spreadsheet editor to create, align, and format GitHub Markdown and CSV tables
PDF Sign & Digital Signature Creator
Draw, type, or upload digital signatures and stamp onto PDF documents locally in-browser
PDF Text Extractor & Word Counter
Extract selectable text streams, paragraphs, and words from PDF documents with TXT/JSON export
Image Flipper & Mirror Tool
Flip images horizontally (mirror), vertically, or rotate 90°/180° with instant canvas export
Image Color Picker & Eyedropper
Inspect exact pixel colors with magnifying loupe and extract HEX, RGB, and HSL palettes
Audio Cutter & Waveform Trimmer
Visual audio waveform trimmer with millisecond precision and in-browser WAV export
Online Screen Recorder (In-Browser)
Record full screen, application windows, or browser tabs with microphone audio directly to WebM
Webcam & Camera Diagnostic Tester
Test camera video resolution, frame rate (FPS), microphone audio levels, and capture HD snapshots
Scientific Calculator & History Tape
Advanced math calculator with trigonometric, logarithmic, roots, powers, and interactive history
Password Strength & Entropy Analyzer
Calculate cryptographic Shannon entropy bits and GPU brute-force crack time estimates
Internet Speed Test
Test real-time internet download speed, latency ping (ms), and network jitter directly in-browser
ZIP Archive Creator & Compressor
Compress multiple files and folders into a clean ZIP archive directly in your browser
ZIP Archive Extractor & Unzipper
Inspect contents and extract individual files from ZIP archives in-browser with zero upload
QR Code Scanner & Camera Reader
Scan QR codes via live webcam, mobile camera, or uploaded image files instantly in-browser
YAML to JSON & JSON to YAML Converter
Convert between YAML and JSON formats with two-way real-time syntax validation
XML Formatter, Minifier & Validator
Format, beautify, minify, and validate XML documents with syntax error highlighting
Precision Online Stopwatch & Lap Timer
Millisecond-accurate digital stopwatch with lap split records and CSV export
Pomodoro Productivity & Focus Timer
Boost daily productivity with 25/5 focus cycles, audio chimes, and streak tracking
Harmonic Color Palette Generator
Generate aesthetic 5-color palettes with lock slots, spacebar rolling, and CSS export
Chmod Permissions Calculator & Generator
Interactive visual Unix permissions calculator for octal numbers, symbolic strings, and commands
IPv4 Subnet & CIDR Mask Calculator
Calculate network address, broadcast, usable host range, and wildcard masks with bitwise precision
Fraction Calculator & Step-by-Step Simplifier
Add, subtract, multiply, and divide fractions with irreducible reduction and step-by-step math
Prime Number Checker & Prime Factorizer
Determine if any number is prime or composite, compute prime factor trees, and list all divisors
Roman Numeral Converter (Two-Way)
Convert between Arabic numbers (1–3999) and Roman numerals with syntax validation
Morse Code Audio Translator & Synthesizer
Translate text to Morse code with real-time audible tone beeps and visual light beacon
NATO Phonetic Alphabet & Spelling Assistant
Spell words and serial codes using the international military aviation NATO alphabet
Interactive Keyboard Diagnostic Tester
Test keyboard keys, ghosting, N-key rollover, press count, and response in real-time
Screen Dead Pixel & Monitor Diagnostic
Inspect monitors, laptops, and phones for dead pixels, stuck subpixels, and backlight bleed
Private Online Notepad & Markdown Scratchpad
Distraction-free browser notepad with automatic local auto-save, word count, and text export
Visual Text & Code Diff Checker
Compare two text or code files side-by-side or inline with granular character-level diff highlighting
Lorem Ipsum Placeholder Text Generator
Generate dummy Latin placeholder text by paragraphs, sentences, words, or HTML lists
SEO URL Slug & Permalink Generator
Transform headlines and titles into clean, search-engine-friendly permalink slugs
JSON to TypeScript Interface & Type Converter
Convert JSON objects into strongly-typed TypeScript interfaces with nested type inference
Interactive CSS Clip-Path Polygon Generator
Visual canvas with draggable handles to create custom CSS clip-path polygon shapes
Audio Tone & Frequency Hearing Tester
Synthesize pure 20Hz–20,000Hz sine, square, sawtooth, and triangle audio tones with stereo panning
White, Pink & Brown Noise Sound Machine
Synthesize soothing ambient noise for deep sleep, work focus, meditation, and tinnitus relief
Digital Metronome & Tap BPM Tempo Finder
Accurate audio metronome with accent beats, time signatures, and interactive tap tempo finder
TDEE & Daily Calorie Maintenance Calculator
Calculate BMR, Total Daily Energy Expenditure (TDEE), and calorie targets for fat loss or muscle gain
Interactive Matrix Math Calculator
Perform matrix addition, subtraction, multiplication, determinants, transposes, and matrix inverses
Random Decision Wheel Spinner
Customizable spinning wheel with realistic physics deceleration and audible ticker clicks
HTML Table to Markdown, CSV & JSON Converter
Convert HTML tables and spreadsheet data into clean Markdown tables, CSV, and JSON arrays
3D Coin Flipper & Multi-Dice Roller
Flip virtual 3D coins or roll multi-sided tabletop RPG dice (d4, d6, d8, d10, d12, d20, d100)
Daily Water Intake & Hydration Calculator
Calculate recommended daily water volume in liters, milliliters, and glasses
Exif Photo Metadata & Camera Inspector
Extract camera make, model, ISO, aperture, shutter speed, lens, and date from photos in-browser
Binary to ASCII Text & Hexadecimal Converter
Two-way translation between plain text, 8-bit binary bytes, and hexadecimal strings
Body Surface Area (BSA) Clinical Calculator
Calculate human Body Surface Area in m² using Mosteller, Du Bois, and Haycock clinical formulas
Interactive SVG Path Visualizer & Editor
Inspect, visualize, and tweak SVG path d attributes with real-time coordinate preview
Audio BPM & Beat Tempo Detector
Detect the exact BPM tempo of MP3 and WAV songs directly in-browser using Web Audio analysis
Markdown to PDF Document Exporter
Live Markdown editor with formatted side-by-side preview and client-side PDF document printing
Loan & Mortgage Amortization Schedule
Calculate monthly loan payments, total interest, and generate annual and monthly amortization tables
Base64 to Image & File Decoder
Decode Base64 strings and Data URIs into downloadable PNG, JPEG, WebP, and SVG images
Braille Code Translator (English & Grade 1 UEB)
Two-way translation between English text and Grade 1 Unified English Braille Unicode characters
Percentage Increase & Growth Calculator
Calculate percentage change, growth rate, and percentage difference between two values
Interactive CSS Gradient Generator
Visual linear and radial CSS gradient builder with interactive angle dial and color stops
Aspect Ratio & Screen Resolution Calculator
Calculate proportional dimensions, simplify aspect ratios, and simulate letterbox/pillarbox padding
Interactive Regex Visualizer & Token Explainer
Deconstruct regular expressions into interactive color-coded syntax tokens with live string matching
Audio Pitch Shifter & Speed Changer
Shift audio pitch in semitones and adjust playback speed in real-time using Web Audio processing
Two-Way Markdown & HTML Converter
Bidirectional real-time conversion between Markdown text and clean semantic HTML markup
JSON Schema Validator & Tester
Validate JSON data payloads against JSON Schema definitions in-browser with specific error pointers
Caesar Cipher & ROT13 Encoder / Decoder
Two-way Caesar shift encryption and decryption with customizable shift key and standard ROT13
Body Fat Percentage Calculator (US Navy Method)
Calculate body fat percentage, fat mass, and lean body mass using the official US Navy circumference method
Interactive CSS Flexbox Playground
Visual interactive sandbox to experiment with CSS Flexbox alignment, direction, wrap, and gap
File Checksum & SHA-256 Hash Calculator
Calculate SHA-256, SHA-512, and SHA-1 checksums for any file in-browser using Web Crypto
Scientific & Engineering Notation Converter
Convert numbers between standard decimal, scientific notation, and engineering notation with SI prefixes
JWT (JSON Web Token) Debugger & Decoder
Client-side JWT token decoder to inspect header, payload claims, and token expiration dates
Voice Recorder & Dictaphone Studio
Record high-quality voice audio from your microphone with live waveform visualizer and in-browser WAV export
CSV to Markdown Table & Markdown to CSV Converter
Bidirectional converter between CSV spreadsheets and GitHub-flavored Markdown tables
cURL to Fetch, Axios & Python Requests Converter
Convert raw terminal cURL commands into clean JavaScript fetch(), axios, and Python requests
Morse Code Audio Synthesizer & Player
Translate text to Morse code and synthesize authentic 800Hz dit and dah audio tones with optical beacon
Ideal Body Weight Calculator (Clinical Formulas)
Calculate ideal body weight using Devine, Robinson, Miller, and Hamwi clinical equations
Interactive CSS Grid Generator & Code Builder
Visual CSS Grid builder to configure columns, rows, and gaps with live responsive preview
Salted Password Hash & Benchmark Generator
Generate cryptographically secure salted password hashes with PBKDF2 iterations and timing benchmarks
Significant Figures (Sig Fig) Calculator & Counter
Count significant figures, round to target precision, and analyze scientific measurement rules
Interactive Regex Cheat Sheet & Live Sandbox
Interactive regex syntax reference guide with anchors, character classes, quantifiers, and live sandbox tester
Audio Volume Booster & Peak Normalizer
Boost quiet MP3 and WAV audio volume up to 400% with clipping limiter protection and peak normalization
Markdown Presentation Slides Maker
Create and present interactive presentation slide decks from plain Markdown notes with fullscreen mode
Fixed Deposit (FD) & Term Deposit Calculator
Calculate Fixed Deposit compound interest, maturity returns, and annual interest growth schedules
SQL to MongoDB Query Translator
Translate relational SQL SELECT queries into MongoDB NoSQL find(), sort(), and limit() shell syntax
IPv6 Address Expander & Compressor
Compress and expand IPv6 addresses according to RFC 5952 with address type classification
Interactive CSS Mesh & Aura Gradient Generator
Create modern fluid multi-color CSS radial mesh aura gradient backgrounds with copyable code
Macronutrient & Calorie Splitter Calculator
Calculate exact daily grams of Protein, Carbohydrates, and Fats for Keto, Muscle Gain, and Weight Loss
Basal Metabolic Rate (BMR) Clinical Calculator
Calculate resting calorie expenditure using Revised Harris-Benedict and Mifflin-St Jeor equations
Typing Speed Test (WPM) & Accuracy Tester
Test your typing speed in Words Per Minute (WPM) with live keystroke accuracy and error tracking
Exact Age & Birthday Countdown Calculator
Calculate your exact age in years, months, days, hours, and seconds with live birthday countdown
Early Loan Payoff & Extra Payment Calculator
Calculate how extra monthly payments accelerate loan payoff dates and reduce interest
JWT Signer & Token Generator (HMAC-SHA256)
Create and cryptographically sign valid JSON Web Tokens in browser with custom secret keys
Online Voice Changer & Audio FX Modulator
Modulate voice recordings in real-time with Web Audio Robot, Deep Bass, Radio, and Echo filters
HTML to PDF Document Exporter
Preview HTML documents and convert to clean printable PDF documents with custom paper sizes
Work Hours & Timesheet Payroll Calculator
Calculate daily and weekly work hours, break deductions, overtime, and gross payroll earnings
Target Heart Rate & Cardio Training Zones (Karvonen)
Calculate personalized target heart rate training zones for fat burning, aerobic, and VO2 max
Text to Speech (TTS) Natural Voice Reader
Listen to any text read aloud with natural system voices, speed controls, and pitch tuning
OpenGraph (OG) & Social Card Preview Generator
Preview social sharing cards for Google, Twitter/X, Facebook, and Discord with copyable meta tags
College & High School GPA Calculator (4.0 & Weighted)
Calculate unweighted 4.0 scale and weighted Honors/AP cumulative GPA with semester course tracking
Cron Expression Generator & Schedule Explainer
Interactive visual cron schedule builder with human-readable plain English schedule translations
Running Pace & Race Time Calculator (5K, 10K, Marathon)
Calculate running pace per kilometer and mile, finish times, and kilometer split schedules
Sleep Cycle & Bedtime Wake-Up Calculator
Calculate optimal bedtimes and wake-up times based on 90-minute REM sleep cycles
Auto Loan & Car Payment Financing Calculator
Calculate monthly car payments, total interest, sales tax, and loan payoff amortization
SVG to PNG High-Res Vector Rasterizer
Convert vector SVG code or files into high-resolution PNG images up to 8K on HTML5 canvas
In-Browser Audio Reverser (Play Audio Backwards)
Reverse audio files and play sound tracks backwards with 1-click reversed WAV audio export
URL Query String Parser & Parameter Builder
Deconstruct complex URLs, inspect search parameters, and interactively build query strings
AES-GCM 256-Bit Text Encryptor & Decryptor
Encrypt and decrypt confidential text with military-grade AES-GCM 256 and PBKDF2 password key derivation
Image to ASCII Art Converter & Text Art Maker
Convert images and photos into creative ASCII text art with custom density ramps and luminance controls
Online Guitar Tuner & Live Microphone Pitch Detector
Standard EADGBE acoustic and electric guitar tuner with live microphone pitch detection and reference tones
WCAG Color Contrast Checker (AA & AAA Standards)
Verify accessibility contrast ratios between text and background colors according to WCAG 2.1 specifications
Online Meme Generator & Custom Caption Maker
Create custom viral memes with top and bottom captions, classic Impact typography, and instant PNG export
Pregnancy Due Date & Conception Calculator (Naegele’s Rule)
Calculate estimated baby due date, current gestational age in weeks and days, and trimester milestones
Code to Image / Code Snippet Screenshot Generator
Create aesthetic code snippet screenshots with macOS window styling, gradient aura backdrops, and PNG export
Binaural Beats & Brainwave Frequency Generator
Synthesize Delta, Theta, Alpha, and Beta brainwave binaural beats for deep sleep, meditation, and focus
HEX to RGB & RGB to HEX Color Code Converter
Convert colors between HEX, RGB, RGBA, HSL, and CMYK formats with instant 1-click clipboard copy
Hearing Frequency Test (20 Hz – 20,000 Hz Ear Range)
Test your acoustic hearing frequency limit with pure sine wave sweeps and age-related hearing benchmarks
Algebra Calculator & Expression Simplifier
Evaluate polynomials, expand binomial products using FOIL, and compute power-rule derivatives
Linear Equation & 2x2 System Solver
Solve single-variable linear equations and 2x2 simultaneous equations with Cramer’s Rule steps
Quadratic Equation Solver (ax² + bx + c = 0)
Calculate real and complex roots, discriminant, parabola vertex, and step-by-step quadratic formula
Fraction Simplifier & Mixed Number Reducer
Reduce fractions to simplest irreducible form, convert improper to mixed numbers, and calculate decimals
Prime Number Generator & Sieve of Eratosthenes
Generate all prime numbers in custom ranges, compute N-th primes, and identify twin prime pairs
Factor Calculator & Prime Factorization Tree
Find all factors, factor pairs, canonical prime factorization with exponents, and divisor sums
GCD Calculator (Greatest Common Divisor / GCF / HCF)
Calculate Greatest Common Divisor and Greatest Common Factor using Euclidean algorithm steps
LCM Calculator (Least Common Multiple)
Calculate Least Common Multiple using the greatest common divisor product formula
Binary Converter (Base-2 to Decimal, Hex, Octal, ASCII)
Convert binary base-2 code into decimal, hexadecimal, octal, and ASCII text characters
Decimal Converter (Base-10 to Binary, Hex, Octal, Roman)
Convert decimal integers into binary, hexadecimal, octal, BCD, and Roman numerals
Hex Converter (Base-16 to Binary, Decimal, Octal, ASCII)
Convert hexadecimal numbers and byte sequences into decimal, binary, octal, and ASCII text
Octal Converter (Base-8 to Decimal, Binary, Hex, chmod)
Convert octal base-8 numbers to decimal, binary, hex, and Unix file permissions
Binary to Decimal Converter with Positional Powers Table
Convert binary base-2 numbers to decimal base-10 with full positional powers of 2 breakdown
Decimal to Binary Converter with Division Steps Table
Convert decimal integers to binary with repeated division by 2 remainder steps table
Hex to Binary Converter with 4-Bit Nibble Table
Translate hexadecimal digits directly into 4-bit binary nibbles with visual mapping
Binary to Hex Converter with 4-Bit Grouping
Convert binary strings into hexadecimal notation with automatic 4-bit grouping and padding
Number to Words & Currency Converter
Convert numeric digits into formal English words and check-writing legal currency formats
Words to Number Converter (English to Digits)
Parse written English number words into numeric integers and decimal values
Triangle Calculator & Trigonometric Solver
Calculate triangle area, interior angles, perimeter, and semi-perimeter from 3 sides (SSS)
Circle Geometry Calculator (Radius, Area, Circumference)
Calculate circle radius, diameter, circumference, surface area, arc length, and sector area
2D Geometry Area Calculator (Multi-Shape)
Calculate 2D surface area for rectangles, triangles, circles, trapezoids, and ellipses
3D Geometry Volume & Surface Area Calculator
Calculate 3D volume and total surface area for cubes, prisms, cylinders, spheres, and cones
Pythagorean Theorem Calculator (a² + b² = c²)
Calculate hypotenuse or missing legs with exact simplified radicals and step-by-step algebra
Itemized Bill Splitter & Dining Expense Calculator
Split restaurant bills and group expenses individually or shared with fair proportional tax and tip
Package Dimension & Dimensional Weight (DIM Weight) Calculator
Calculate volumetric DIM weight for parcels across FedEx, UPS, DHL, and USPS to avoid surprise carrier fees
Cooking & Baking Ingredient Volume-to-Weight Converter
Accurately convert cups, tablespoons, and teaspoons into exact grams and ounces for 13+ baking ingredients
Universal Random Number, Dice & Coin Generator
Generate fair cryptographically random numbers, roll dice (d6, d20), and flip coins for decisions and games
PDF Compressor
Reduce PDF file size online while maintaining maximum visual quality
PDF to Word Converter
Convert PDF documents to editable Microsoft Word DOCX files client-side
Word to PDF Converter
Convert Word DOCX documents to standard PDF files directly in your browser
Excel to PDF Converter
Convert Excel spreadsheets (XLSX, CSV) to styled PDF tables
PDF to Excel Converter
Extract tabular data and text from PDF into Excel XLSX spreadsheets
PowerPoint to PDF Converter
Convert PowerPoint presentations (PPTX) to clean vector PDF slides
PDF to PowerPoint Converter
Convert PDF document pages into editable PowerPoint PPTX presentation slides
PDF to JPG Converter
Convert PDF pages into high-resolution JPG images with custom DPI & quality
PDF to PNG Converter
Convert PDF pages into lossless PNG graphics with crystal clarity
JPG to PDF Converter
Combine multiple JPG photos into a single formatted PDF document
PNG to PDF Converter
Convert PNG graphics and illustrations into PDF pages with zero compression loss
PDF Repair & Corrupt Document Recovery
Repair corrupted, broken, or unreadable PDF documents client-side
PDF Compare & Diff Checker
Compare two PDF files side-by-side and highlight additions, deletions, and edits
PDF OCR & Text Extractor
Extract selectable text streams and content from PDF files directly in your browser
PDF Form Filler & Field Editor
Fill interactive AcroForm fields, checkboxes, dropdowns, and stamp custom text
Image Rotator
Rotate images 90°, 180°, 270°, or any custom angle with zero loss in resolution
JPG to PNG Converter
Convert JPEG photos to lossless 32-bit PNG images in browser
PNG to JPG Converter
Convert PNG graphics to compact, web-friendly JPEG files
WebP Converter
Convert JPG/PNG to modern WebP format or decode WebP to PNG/JPG
AVIF Converter
Convert images to next-generation AV1 Image File Format (AVIF)
HEIC to JPG Converter
Convert Apple iPhone HEIC/HEIF photos to universal JPEG images
SVG to Raster Converter
Render vector SVG graphics into high-resolution PNG, JPG, and WebP images
Base64 to Image Decoder
Decode Base64 strings and Data URIs into downloadable image files
Remove Background
Erase image backgrounds and create transparent PNG cutouts client-side
Image Blur
Apply smooth Gaussian blur to photos and backgrounds with custom radius
Image Sharpen
Enhance photo sharpness, recover fine textures, and boost clarity
Image Pixelate
Turn photos into 8-bit retro pixel art or censor sensitive information
Passport Photo Maker
Create official biometric passport photos and 4x6 inch print sheets
ID Photo & Badge Maker
Format photos for Student IDs, Employee badges, and driver licenses
Image Merger
Combine multiple images horizontally, vertically, or in a collage grid
Image Upscaler
Enlarge low-resolution photos 2x or 4x with bicubic super-resolution
Image Enhancer
One-click Magic Auto-Enhance, tone curve, vibrance, and color tuning
Screenshot Mockup & Beautifier
Wrap screenshots in browser frames, vibrant gradient backdrops, and soft shadows
Video Compressor
Compress MP4, WebM, and MOV videos locally with custom bitrate and resolution scaling
Video Converter (MP4, WebM)
Convert videos between MP4, WebM, and container formats with customizable quality
Video Cutter & Clip Extractor
Cut and export specific video segments with millisecond precision scrubber
Video Trimmer (Head & Tail)
Trim unwanted start and end parts from videos with instant playback preview
Video Cropper (16:9, 9:16, 1:1)
Crop video area to standard aspect ratios for TikTok, Reels, Shorts, and Instagram
Video Resizer & Dimension Scaler
Scale video dimensions to 1080p, 720p, 480p, or custom width and height
Video Rotator & Mirror Flipper
Rotate video 90°, 180°, 270° and mirror flip horizontally or vertically
Video Merger & Clip Joiner
Combine and stitch multiple video clips sequentially into one continuous file
Video Splitter (WhatsApp & Reel Status)
Split long videos into equal clips for WhatsApp 30s status, Instagram reels, and stories
Video to MP3 Audio Converter
Extract sound and soundtrack from any video file into clean MP3 audio
Video to WAV Lossless Extractor
Extract lossless 16-bit uncompressed PCM WAV audio track via Web Audio API
Video to GIF Converter
Convert video snippets into high-quality animated GIFs with custom FPS and size
GIF to Video (MP4 / WebM)
Convert animated GIF files into smooth looping MP4 or WebM video format
Video to Images (Frame Sequence ZIP)
Extract frame-by-frame image sequences from video and download as a ZIP archive
Extract Video Frames (Freeze Snapshot)
Capture high-resolution still freeze-frame photos at exact video timestamps
Change Video FPS (Frame Rate Converter)
Convert video frame rate to 60 FPS, 30 FPS, 24 FPS cinema, or 15 FPS web
Change Video Resolution (4K, 1080p, 720p)
Upscale or downscale video resolution with preset dimensions and bitrate optimization
Change Video Aspect Ratio (Letterbox & Fill)
Convert aspect ratio (16:9 to 9:16 vertical reels, 1:1 square) with blur or pad
Mute Video (Remove Audio Track)
Strip audio track from video files and export a lightweight silent video
Remove Video Audio (Sound Stripper)
Separate and delete audio streams from MP4, WebM, and MOV containers
Add Audio to Video (Music & Voiceover)
Merge background music or audio voiceover into video in-browser
Video Speed Changer (Slow-Mo & Timelapse)
Speed up (1.25x–4x timelapse) or slow down (0.25x–0.75x slow motion) video clips
Video Metadata Remover (Strip GPS & Device)
Zero out GPS location, camera model, author, and date tags from MP4/WebM containers
MP3 Cutter & Ringtone Maker
Cut MP3 songs with interactive waveform, millisecond precision, and fade effects
MP3 Trimmer (Head & Tail Trimmer)
Trim dead air and unwanted silence from the start and end of MP3 recordings
Audio Merger & Song Joiner
Combine and stitch multiple MP3 and WAV songs into one continuous audio track
Audio Splitter (Chapters & Tracks)
Split large podcast recordings and albums into individual songs or chapters
Audio Compressor (Reduce File Size)
Compress audio megabytes by downsampling sample rates and downmixing channels
MP3 Converter (Universal Audio Transcoder)
Convert WAV, M4A, AAC, OGG, and FLAC into universal MP3 audio format
WAV Converter (Lossless 16-bit PCM)
Convert compressed MP3, M4A, and OGG audio into uncompressed studio-grade WAV
M4A to MP3 Converter (Apple Voice Memos)
Convert iPhone Voice Memos and iTunes M4A/AAC files into standard MP3
WAV to MP3 Converter (Compress to MP3)
Convert heavy 50MB+ studio WAV files into lightweight compact MP3 audio
OGG Converter (Vorbis & Opus Format)
Convert audio into open-standard OGG Vorbis format for game dev and web
FLAC Converter (Lossless Audio Decoder)
Decode and convert audiophile FLAC files into WAV or MP3 audio
Audio to Video (1080p Animated Spectrum)
Render 1080p MP4/WebM video with animated waveform for YouTube and Reels
Audio to GIF (Dancing Waveform Animation)
Create animated GIF waveforms from audio clips for Discord and social feeds
Change Audio Speed (0.5x to 2.5x Tempo)
Speed up podcasts or slow down music playback from 0.5x to 2.5x speed
Change Audio Pitch (Semitone Transposer)
Shift musical pitch up or down by semitones (-12 to +12) for vocal practice
Increase Volume (Audio Booster & Gain)
Boost quiet audio recordings up to 300% (+20dB) with soft-saturation limiter
Normalize Audio (Peak & RMS Loudness)
Normalize audio peak loudness to standard -0.5dBFS broadcast level
Remove Silence (Auto Dead-Air Trimmer)
Detect and automatically remove awkward silences and pauses below -40dB
Fade In / Out (Smooth Audio Transitions)
Apply smooth volume fade-in at the start and fade-out at the end of tracks
Audio Metadata Editor (ID3 Tag Editor)
View, edit, and update ID3 tags: Song Title, Artist, Album, Year, and Genre
Audio Metadata Remover (Strip ID3 & Privacy Tags)
Zero out ID3v1, ID3v2, and RIFF container tags to protect your privacy
Waveform Generator (Export High-Res PNG & SVG)
Generate and download high-resolution audio waveform graphics in PNG and SVG
Audio Visualizer (Live Spectrum & Wave Player)
Real-time animated frequency spectrum bars, neon wave, and oscilloscope visualizer
Character Counter & Social Media Tracker
Count characters with and without spaces plus live social media limits.
Sentence Counter & Complexity Analyzer
Count sentences and analyze sentence complexity in your text.
Paragraph Counter & Pacing Inspector
Count paragraphs and evaluate structural pacing.
Reading Time Calculator (Silent & Speaking Speeds)
Calculate estimated reading time and speaking presentation duration.
Readability Checker (Flesch-Kincaid, Gunning Fog, SMOG)
Score text readability with Flesch, Gunning Fog, and SMOG formulas.
Text Statistics & Linguistic Analyzer
Deep linguistic statistics: syllables, lexical diversity, and word density.
Uppercase Converter (ALL CAPS)
Convert text to UPPERCASE letters instantly.
Lowercase Converter (all small letters)
Convert text to lowercase letters instantly.
Sort Lines Alphabetically & Numerically
Sort lines A-Z, Z-A, numerically, by length, or random shuffle.
Reverse Text, Words & Upside-Down Flipper
Reverse characters, word order, line sequence, or flip upside-down.
Whitespace Remover & Space Cleaner
Remove extra spaces, trailing spaces, tabs, and duplicate blanks.
Line Break Remover & Text Joiner
Remove carriage returns and join lines into single paragraphs.
Find and Replace Text (RegEx Supported)
Search and replace text strings or regular expressions.
Text Compare & Similarity Checker
Compare two texts and calculate similarity percentage.
Random Text & Dummy Content Generator
Generate random realistic sentences, words, and dummy data.
Email Extractor (Bulk Email Address Scraper)
Extract all email addresses from raw text, code, or documents.
URL Extractor & Web Link Finder
Extract HTTP/HTTPS web links and domains from text.
Number Extractor & Calculation Tool
Extract all numbers and calculate sum, average, min, and max.
Text to ASCII Code Converter
Convert characters to ASCII decimal, hex, binary, and HTML entities.
ASCII to Text Decoder
Decode ASCII decimal, hex, or binary numbers into readable text.
Text Formatter, Line Wrapper & Indenter
Wrap lines at N characters, indent lines, and add prefixes.
Markdown Table & Document Formatter
Auto-align Markdown tables and prettify document syntax.
HTML to Markdown Converter
Convert HTML markup, rich web copy, and articles to Markdown.
Basic Calculator (4-Function Office Desk Calculator)
Standard 4-function desk calculator with calculation tape and memory.
Ratio Calculator & Proportional Scaler
Simplify ratios A:B and solve proportional equations A:B = C:D.
Average Calculator (Mean, Median, Mode & Range)
Calculate arithmetic mean, median, mode, and range from numbers.
Date Calculator & Business Days Duration
Calculate calendar days, business workdays, and weeks between dates.
Time Calculator & Hours Duration Adder
Add, subtract, and calculate hours and minutes duration for payroll.
Margin Calculator (Markup vs Profit Margin)
Compare profit margin vs markup percentage and cost price.
Electricity Cost Calculator (Appliance Energy Bill)
Calculate power consumption in kWh and estimated electric bill.
Construction & Concrete Slab Calculator
Calculate cubic yards of concrete, square footage, and bags required.
Statistics Calculator (Standard Deviation & Variance)
Calculate sample/population standard deviation, variance, and IQR.
Probability & Combinatorics Calculator (nPr & nCr)
Calculate permutations (nPr), combinations (nCr), and event odds.
Length & Distance Converter
Convert meters, kilometers, miles, feet, inches, yards, and nautical miles.
Weight Converter
Convert kilograms, pounds, ounces, grams, stones, and metric tonnes.
Mass Converter
Convert scientific, laboratory, and industrial mass measurements.
Temperature Converter
Convert Celsius (°C), Fahrenheit (°F), Kelvin (K), and Rankine (°R).
Area Converter
Convert square meters, square feet, acres, hectares, and square kilometers.
Volume & Capacity Converter
Convert liters, gallons, milliliters, cubic meters, cups, and fluid ounces.
Speed Converter
Convert km/h, mph, knots, m/s, ft/s, and Mach.
Time Converter
Convert nanoseconds, seconds, minutes, hours, days, weeks, months, and centuries.
Pressure Converter
Convert Pascal, Bar, PSI, Standard Atmospheres (atm), and Torr/mmHg.
Energy & Work Converter
Convert Joules, Kilowatt-hours (kWh), Calories, BTUs, and Foot-pounds.
Power Converter
Convert Watts, Kilowatts, Mechanical Horsepower (hp), and Metric Horsepower (PS).
Force Converter
Convert Newtons (N), Kilonewtons (kN), Pound-force (lbf), and Kilogram-force (kgf).
Frequency Converter
Convert Hertz (Hz), Kilohertz, Megahertz, Gigahertz, and RPM.
Angle Converter
Convert Degrees (°), Radians (rad), Gradians (grad), Arcminutes, and Turns.
Data Storage & Bandwidth Converter
Convert Decimal SI ($10^3$) vs Binary IEC ($2^{10}$) and calculate usable hard drive capacity.
Number Base Converter (Base 2 to 36)
Convert numbers between any radix from Base 2 to Base 36 with polynomial steps.
JSON Validator & Error Finder
Validate JSON data online with line and column syntax error detection
JSON Minifier & Compressor
Compress and minify JSON data by stripping unnecessary whitespace
JSON to CSV Converter
Convert JSON arrays of objects into formatted CSV spreadsheets
CSV to JSON Converter
Transform CSV spreadsheet data into structured JSON objects or 2D arrays
XML Validator & Syntax Checker
Validate XML files and pinpoint unclosed tags or malformed XML syntax
YAML Formatter & Beautifier
Clean, format, and align indentation in YAML configuration files
HTML Formatter & Beautifier
Format and beautify messy HTML code with clean tag indentation
HTML Beautifier & Code Cleaner
Clean, structure, and beautify messy HTML web pages and templates
CSS Formatter & Beautifier
Format and beautify CSS stylesheets with clean selector rule indentation
JavaScript Formatter & Beautifier
Beautify and format JavaScript code with structured bracket indentation
HTML Minifier & Compressor
Minify and compress HTML markup to reduce page weight and load times
CSS Minifier & Compressor
Minify CSS stylesheets by stripping comments, whitespace, and semicolons
JavaScript Minifier & Compressor
Minify JavaScript code online by removing comments and unneeded whitespace
Regex Pattern Generator & Cheatsheet
Generate pre-built regular expression patterns for emails, URLs, IP addresses, and dates
Regex String Escaper
Escape special regex metacharacters in literal strings for dynamic RegExp construction
Base64 Encoder (UTF-8)
Encode text, JSON, and international UTF-8 strings into Base64 format
Base64 Decoder (UTF-8)
Decode Base64 strings back to plain text, JSON, or UTF-8 characters
URL Encoder (Percent-Encoding)
Encode query parameters and URLs into percent-encoded format online
URL Decoder (Percent-Decoding)
Decode percent-encoded URLs and query parameters back to plain text
HTML Entity Encoder
Encode special characters into HTML entities to prevent XSS vulnerabilities
HTML Entity Decoder
Decode HTML entities and numerical character references back to plain text
Unix Timestamp & Epoch Converter
Convert Unix epoch seconds and milliseconds to UTC, ISO 8601, and local time
Cron Expression Generator & Builder
Generate and build 5-part cron schedule expressions with human explanations
Color Code Converter (HEX, RGB, HSL, CMYK)
Convert colors between HEX, RGB, RGBA, HSL, and CMYK formats online
Markdown to HTML Converter & Previewer
Convert raw Markdown to styled HTML with instant side-by-side preview
Diff Checker & Code Comparator
Compare two snippets of code or text line-by-line with color-coded diff markers
SQL Query & Schema Generator
Design table structures and generate ANSI, Postgres, MySQL, and SQLite queries
Git Command & Workflow Generator
Generate accurate Git terminal commands for committing, branching, merging, and undoing
Secure Password Generator
Generate cryptographically secure, high-entropy passwords with custom character rules
Password Strength & Entropy Analyzer
Test password crack times, Shannon entropy, and security vulnerabilities offline
Memorable Diceware Passphrase Generator
Generate memorable, multi-word passphrases using EFF wordlists and cryptographic randomness
Random String & Cryptographic Salt Generator
Create high-entropy random character strings, salts, and nonces with custom charsets
Cryptographic Hash Matrix Generator
Compute SHA-256, SHA-512, SHA-1, and MD5 hashes simultaneously with 1-click copying
MD5 Hash Generator
Generate 128-bit MD5 checksum digests for legacy system validation and checksum comparison
SHA Hash Family Digest Generator
Calculate secure SHA family message digests (SHA-1, SHA-256, SHA-512) directly in your browser
SHA-256 Hash Generator
Compute 256-bit SHA-2 cryptographic hashes for blockchain, verification, and API signatures
SHA-512 Hash Generator
Calculate 512-bit cryptographic digests with maximum collision resistance
HMAC Cryptographic Signature Generator
Sign API payloads and webhooks with HMAC-SHA256, HMAC-SHA512, and HMAC-SHA1
UUID & GUID v4 Generator
Batch generate cryptographically unique RFC 4122 Version 4 UUIDs and GUIDs
API Token & Bearer Key Generator
Generate secure hex, base64url, and alphanumeric API bearer tokens with custom prefixes
Cryptographic Secret Key Generator (.env)
Generate 128, 256, and 512-bit secret keys for JWT secrets, database encryption, and .env files
Shannon Information Entropy Calculator
Measure information theoretical entropy, bit density, and character distribution of any text
AES-GCM 256-Bit Text Encryptor & Decryptor
Client-side authenticated AES-GCM 256-bit encryption with PBKDF2 password derivation
Base64 Encoder & Decoder (UTF-8 Safe)
Encode and decode text, emoji, and binary payloads to standard and URL-safe Base64
URL & Query String Encoder / Decoder
Percent-encode and decode URLs, query parameters, and webhooks safely
File Hash & Digest Calculator
Compute SHA-256, SHA-512, and MD5 hashes of any local file without uploading
File Checksum & Integrity Verifier
Verify downloaded file integrity by comparing computed hashes with vendor checksums
Universal Metadata Privacy Stripper
Scrub hidden author tags, timestamps, and camera details from photos and documents
Image EXIF & GPS Metadata Remover
Strip GPS location coordinates and camera metadata from JPEG photos without recompression
PDF Metadata & Author Stripper
Sanitize creator, author, producer, and modification timestamps from PDF documents
Privacy Text Cleaner & PII Redactor
Automatically detect and redact emails, credit cards, SSNs, and API keys from text
Free URL Shortener & Link Reducer
Shorten long URLs, clean tracking parameters, and generate QR codes
URL Component Parser & Query Inspector
Deconstruct URLs into protocol, host, path, port, hash, and query parameters
URL Tracking Parameter Cleaner & Sanitizer
Strip UTM tags, fbclid, gclid, and marketing telemetry from web links
Brandable Domain Name Generator
Generate creative, brandable domain name ideas with modern TLD extensions
IP Address Checker & Geolocation Inspector
Detect your public IP address, ISP, city, country, and subnet allocation
IPv4 Subnet & CIDR Calculator
Calculate network address, broadcast, usable host range, and netmask for CIDR prefixes
IPv6 Subnet & Address Compressor/Expander
Expand 128-bit IPv6 addresses, compress with RFC 5952, and compute prefix capacity
User Agent Parser & Client Deconstructor
Deconstruct browser User-Agent strings into browser, OS, engine, and device form factor
HTTP Security Header Analyzer & Auditor
Audit web response headers for CSP, HSTS, X-Frame-Options, and security compliance
HTTP Status Code Lookup & Developer Reference
Comprehensive guide to 1xx, 2xx, 3xx, 4xx, and 5xx HTTP response codes with RFC references
DNS Record Lookup (DNS-over-HTTPS)
Query authoritative DNS records (A, AAAA, CNAME, MX, TXT, NS, SOA) via RFC 8484 DoH
WHOIS & RDAP Domain Registry Lookup
Query domain ownership, registrar information, registration dates, and nameservers
SSL / TLS Certificate Checker & Security Inspector
Inspect SSL/TLS certificates, Certificate Authority (CA), expiration date, and SANs
Port Checker & Network Port Security Reference
Audit common network service ports, security risk exposures, and test endpoint reachability
XML Sitemap Generator (W3C Standard)
Generate standard XML sitemaps for Google Search Console and Bing Webmaster
Robots.txt Generator & AI Scraper Controller
Create robots.txt crawler directives, allow/disallow paths, and block AI scrapers
Barcode Scanner & Image Matrix Reader
Scan and decode 1D and 2D barcodes from images, photos, and screenshots in-browser
Meta Description Generator & SERP Length Checker
Generate high-CTR meta descriptions with pixel width and character count validation
SEO Page Title Generator & Pixel Meter
Generate high-ranking Google title tags with pixel-perfect truncation preview
Open Graph (OG) Meta Tags Generator
Create Facebook, LinkedIn, Discord, and Slack rich social preview tags
Twitter Card & X Preview Tags Generator
Generate Twitter / X Summary and Summary Large Image card meta tags
Multi-Platform Social Media Card Previewer
Simulate how your URL looks on Google, Facebook, Twitter, and LinkedIn simultaneously
JSON-LD Schema Markup Generator
Generate rich snippet JSON-LD structured data for Google Search
FAQPage JSON-LD Schema Generator
Generate FAQPage schema markup to trigger Google FAQ accordion rich snippets
BreadcrumbList Schema Markup Generator
Generate BreadcrumbList JSON-LD for Google breadcrumb navigation links
Article & BlogPosting Schema Generator
Generate Article, NewsArticle, and BlogPosting JSON-LD structured data
SERP Snippet & Pixel Truncation Simulator
Preview how your title and description render on Google Desktop and Mobile
Google SERP Simulator with Rich Snippets
Test Google search snippets with review star ratings, publish dates, and site links
XML Sitemap Validator & Syntax Inspector
Validate XML sitemap syntax, structure, URL limits, and XML tags 100% client-side
Canonical URL Tag Generator & Sanitizer
Generate rel="canonical" tags to prevent duplicate content indexing penalties
Hreflang Tags Generator for International SEO
Generate multi-language and multi-region hreflang alternate tags and x-default
SEO URL Slug Generator & Permalinks Maker
Convert titles and article headlines into clean, keyword-rich SEO URL slugs
SEO Keyword Density Checker & N-Gram Analyzer
Analyze 1-word, 2-word, and 3-word phrase frequencies to prevent keyword stuffing
SEO Word Counter & Readability Metrics
Count words, characters, sentences, paragraphs, reading time, and speaking time
301 / 302 Redirect Rules Generator
Generate 301 and 302 redirects for Apache, Nginx, Netlify, and Cloudflare
Apache .htaccess Configuration Generator
Generate production-grade .htaccess rules for HTTPS, Gzip, browser cache, and security
PWA Web App Manifest Generator
Generate site.webmanifest and manifest.json for Progressive Web Apps
YouTube Thumbnail Resizer (1280x720)
Resize and crop images to exact 1280x720 16:9 YouTube video thumbnail specifications
YouTube Banner & Channel Art Resizer (2560x1440)
Resize channel art to 2560x1440 with safe area guides for mobile and desktop
YouTube Shorts Cover & Frame Resizer (1080x1920)
Resize vertical frames and covers to 1080x1920 9:16 for YouTube Shorts
Instagram Post Resizer (Square 1:1, Portrait 4:5)
Resize photos for Instagram Feed: Square 1080x1080, Portrait 1080x1350, Landscape 1080x566
Instagram Story & Reel Resizer (1080x1920)
Resize photos and covers to 1080x1920 9:16 for Instagram Stories and Reels
TikTok Video & Cover Resizer (1080x1920)
Resize covers and videos to 1080x1920 vertical 9:16 with TikTok UI safe zones
Facebook Cover Photo Resizer (820x312 / 640x360)
Resize banners for Facebook Profiles, Pages, and Groups with mobile safe area
Universal Social Media Image Resizer
Resize one photo for YouTube, Instagram, TikTok, Facebook, Twitter, and LinkedIn
Social Video Aspect Ratio Converter & Padder
Convert video aspect ratios (16:9 ↔ 9:16 ↔ 1:1 ↔ 4:5) with letterbox and pillarbox padding
Social Caption Formatter & Clean Line Breaker
Format Instagram and TikTok captions with invisible line breaks and fancy Unicode fonts
Hashtag Generator & Niche Tag Explorer
Explore viral, high-engagement hashtags categorized by creator niche
YouTube Viral Title Generator & Character Meter
Generate high-CTR YouTube video titles with psychological triggers and length validation
YouTube Description Formatter & Chapter Generator
Format YouTube descriptions with video chapters, timestamps, links, and subscribe CTAs
YouTube Video Tag Generator (500 Char Meter)
Generate comma-separated YouTube tags with live 500-character limit counter
Social Bio Generator & Profile Styler
Craft professional bios for Instagram, TikTok, Twitter/X, and LinkedIn with Unicode fonts
YouTube Thumbnail 2MB File Compressor
Compress heavy thumbnails to crisp 1280x720 JPEG strictly under YouTube 2.0 MB limit
Subtitle Formatter & Line Wrapper (42 Chars)
Clean subtitle transcripts and wrap lines exceeding broadcast standard 42 characters
SRT Subtitle Converter & Generator
Convert transcripts, WebVTT, and text timestamps into standard SubRip (.srt) files
VTT WebVTT Subtitle Converter & Generator
Convert SRT and plain transcripts into HTML5 WebVTT (.vtt) caption files
SRT ↔ VTT Bi-Directional Subtitle Converter
Instant lossless two-way conversion between SubRip (.srt) and WebVTT (.vtt)
Video Caption Tools & Subtitle Time Shifter
Shift subtitle timestamps (+/- seconds), fix audio sync drift, and adjust caption timings
Pick Colors From Image
Pick and inspect exact colors from any image with an interactive pixel magnifier loupe
Image Palette Extractor
Extract harmonious dominant color schemes and weighted palettes from any image
Color Picker
Pick, inspect, and copy HEX, RGB, HSL, and CMYK color codes instantly
HEX Converter
Convert hexadecimal color codes to RGB, HSL, CMYK, and HSV
RGB Converter
Convert RGB and RGBA values to HEX, HSL, and CMYK formats
HSL Converter
Convert HSL and HSLA hue, saturation, and lightness to HEX and RGB
CMYK Converter
Convert print CMYK ink percentages to screen RGB and HEX colors
HEX ↔ RGB Converter
Bi-directional instant converter between Hexadecimal and RGB color codes
RGB ↔ HSL Converter
Two-way converter between RGB color space and cylindrical HSL coordinates
Color Palette Generator
Generate aesthetic harmonious color schemes and palettes with one click
Random Color Generator
Generate random vibrant, pastel, neon, and dark aesthetic colors
Material Color Generator
Generate Google Material Design 50-900 tonal palettes and accent shades
Tailwind Color Converter
Match any custom HEX or RGB color to the closest Tailwind CSS color and shade
Color Blindness Simulator
Simulate color perception for Protanopia, Deuteranopia, Tritanopia, and Achromatopsia
Contrast Checker
Calculate color contrast ratio between text and background with live preview
WCAG Contrast Checker
Verify WCAG 2.1 & 2.2 accessibility compliance for AA and AAA standards
Gradient Generator
Design custom multi-stop linear, radial, and conic gradients interactively
CSS Gradient Generator
Generate clean, modern CSS background gradient code and Tailwind classes
SVG Generator
Generate layered SVG page waves, organic vector blobs, and clean graphics
CSS Shadow Generator
Create multi-layer CSS box shadows and drop shadows with 3D preview
CSS Border Generator
Design CSS borders, individual corner radii, and 8-point ellipse shapes
CSS Button Generator
Design interactive UI buttons with gradients, hover states, and shadows
CSS Glassmorphism Generator
Generate modern frosted glass effects with backdrop blur and specular borders
CSS Animation Generator
Create custom CSS @keyframes animations: bounce, pulse, float, and shake
Favicon Generator
Generate multi-size web favicons, Apple Touch icons, and manifest snippets
CSV Viewer
Fast online CSV spreadsheet viewer with live search, column statistics, and formula evaluator
CSV Editor
Interactive spreadsheet editor to modify, add, and delete CSV cells with formula calculations
CSV Formatter
Beautify, normalize delimiters, and standardize quotes in messy CSV files
CSV to JSON
Convert CSV rows into structured JSON arrays of objects with smart type detection
JSON to CSV
Convert JSON arrays and objects into clean tabular CSV spreadsheets
CSV to Excel
Convert CSV and TSV files into downloadable genuine Excel (.xlsx) workbooks
Excel to CSV
Convert Microsoft Excel (.xlsx) workbooks into clean standard CSV files
TSV Converter
Bidirectional converter between Tab-Separated (TSV) and Comma-Separated (CSV)
Data Cleaner
Clean messy spreadsheets: trim whitespace, strip invalid chars, normalize casing, and fill nulls
Duplicate Row Remover
Find and remove duplicate rows across your entire dataset or key columns with multiple modes
Column Splitter
Split a single column into multiple columns by delimiter or fixed character width
Column Merger
Combine multiple spreadsheet columns into a single unified column with templates
Sort CSV
Sort CSV spreadsheet data by numeric, alphabetical, date, or length order
Filter CSV
Filter spreadsheet rows using SQL-like conditional rules and operators
JSON Viewer
Syntax-highlighted JSON viewer with beautification, tree explorer, and auto-repair
JSON Tree Viewer
Interactive collapsible tree explorer with live search, path copy, and auto-repair
XML Viewer
Format, beautify, and inspect XML documents and feeds with indentation and JSON conversion
Data Table Generator
Convert CSV into responsive HTML5, Tailwind CSS, Markdown, ASCII, LaTeX, and SQL tables
Chart Generator
Create beautiful Bar, Line, Pie, Donut, Scatter, and Histogram charts with SVG and 2x PNG export
Bar Chart
Create customizable vertical and horizontal bar charts with SVG and 2x PNG export
Line Chart
Generate multi-point trendline and time-series line charts with area fills and PNG export
Pie Chart
Design proportional pie charts and donut charts with percentage labels and PNG export
Scatter Plot
Generate 2D coordinate scatter plots with calculated linear regression trendlines and PNG export
Histogram
Statistical frequency distribution histogram with automated Sturges' binning and PNG export
EMI Calculator
Equated monthly installment calculator with amortization schedule and early payoff savings
Loan Calculator
Comprehensive loan repayment, interest breakdown, and amortization schedule
Mortgage Calculator
PITI home loan calculator with property taxes, home insurance, PMI, and HOA fees
Interest Calculator
Simple interest calculator with daily accrual and total maturity yield
Compound Interest Calculator
Future value investment calculator with periodic contributions and Rule of 72
Investment Calculator
Portfolio growth and wealth accumulation calculator with recurring contributions
SIP Calculator
Systematic Investment Plan calculator with annual step-up percentage
ROI Calculator
Return on investment and Compound Annual Growth Rate (CAGR) calculator
Inflation Calculator
Calculate purchasing power loss and future equivalent costs over time
Savings Calculator
Savings goal planner and required monthly deposit calculator
Retirement Calculator
Retirement nest egg, 4% safe withdrawal rule, and spending gap analysis
Profit Calculator
Gross profit, operating profit (EBIT), and net income calculator
Profit Margin Calculator
Calculate gross margin percentage, selling price, and markup
Markup Calculator
Calculate retail selling prices and profit margins from cost markup
Discount Calculator
Calculate sales discounts, stacked coupons, sales tax, and total savings
Break-Even Calculator
Calculate break-even units, revenue threshold, and contribution margin
Salary Calculator
Convert annual salary to hourly, weekly, bi-weekly, and monthly pay
Hourly Wage Calculator
Calculate annual salary equivalent and take-home pay from hourly rate
Overtime Calculator
Calculate time-and-a-half (1.5x) and double time (2.0x) overtime pay
Tax Calculator
Multi-jurisdiction tax calculator with add tax and reverse tax extraction
GST Calculator
Goods & Services Tax calculator with CGST/SGST split and reverse GST
VAT Calculator
Value Added Tax calculator for UK, EU, UAE, and Saudi Arabia
Sales Tax Calculator
US 50 states sales tax calculator with combined state and local averages
Currency Converter
Fast currency converter with 160+ world currencies and exchange rates
Invoice Generator
Printable PDF invoice maker with customizable line items and currency
Quote Generator
Create professional price estimates and business quotations
Receipt Generator
Create official sales receipts, cash proof, and payment confirmations
Invoice Number Generator
Sequential invoice and billing reference code batch generator
Business Name Generator
Brandable business and startup name generator with industry filtering
Age Calculator
Calculate exact chronological age in years, months, days, hours, and minutes with life milestones
Date Difference Calculator
Calculate the exact duration and time span between any two calendar dates
Days Between Dates Counter
Count calendar days, workdays, and weekends between two dates instantly
Add Days to Date Calculator
Add days, weeks, months, and years to any starting date to project future deadlines
Subtract Days from Date Calculator
Subtract days, weeks, months, and years to calculate past historical dates
Leap Year Checker
Verify if any Gregorian year is a leap year with rule explanations and leap tables
Business Days Calculator
Calculate net business working days between two dates excluding weekends and holidays
Working Days & Project Deadline Calculator
Add business working days to project start date to compute delivery deadlines
Week Number Calculator
Find the official ISO 8601 week number, day of year, and remaining days for any date
Time Duration & Hours Calculator
Calculate elapsed hours, minutes, and seconds between times with break deductions
Time Zone Converter & Meeting Planner
Convert time across global cities and find overlapping international business hours
World Clock & Multi-City Time Viewer
Live real-time digital clocks across major international financial centers
Countdown Timer
Real-time live countdown timer to holidays, product launches, and custom events
Exam Countdown & Study Planner
Target exam countdown timer with study hours available and chapter time allocation
Unix Timestamp & Live Epoch Clock
Real-time Unix epoch timestamp ticker with one-click clipboard copying
Unix Timestamp Converter
Bidirectional converter between Unix timestamps and human-readable dates
Date Format Converter
Convert dates between ISO 8601, US, European, RFC 2822, and SQL formats
Calendar Generator
Generate interactive and printable monthly calendars with custom week starts
Monthly Calendar View & Planner
Clean, printable monthly grid calendar with date navigation and event planning view
Perpetual Calendar (Year 1 to 9999)
Find the day of the week for any Gregorian calendar date from Year 1 to 9999 AD
Universal File Compressor
Compress any file using native GZIP and Deflate algorithms directly in your browser
File Size & Transfer Time Calculator
Convert file size units (B, KB, MB, GB, TB) and estimate download/upload times across 4G, 5G, and Fiber
Chunk File Splitter
Split large files into smaller parts by MB chunk size or equal slices for email and Discord sharing
Sequential File Merger
Merge split chunks (.part1, .part2) back into original complete files 100% in-browser
TAR Archive Creator & Extractor
Create and extract POSIX USTAR standard .tar archives in pure JavaScript without software
GZIP Compressor & Decompressor
Compress any file into .gz or decompress .gz archives using native browser streaming
File Hash & Checksum Calculator
Calculate SHA-256, SHA-512, SHA-1, and MD5 file digests and verify against expected release checksums
Magic Byte File Type Checker
Inspect binary magic bytes to detect true file formats and uncover spoofed file extensions
MIME Type & Extension Lookup
Detect MIME types from uploaded files or search the comprehensive 250+ IANA MIME database
Duplicate File Finder & Matcher
Upload multiple files to detect exact binary duplicates and calculate wasted disk storage
File Metadata & Header Inspector
Inspect file properties, exact byte sizes, timestamps, SHA-256 hashes, and 256-byte hex dump
File Metadata Cleaner & Sanitizer
Strip metadata tags, XML comments, design editor attributes, and sanitize files before sharing
Filename Sanitizer & Slugifier
Remove illegal OS characters, strip accents, fix spaces, and convert filenames to web-safe slugs
Batch File Renamer & Numbering Studio
Bulk rename files with prefixes, suffixes, find & replace, sequential numbering, and case formatting
Image to Text OCR Converter
Convert images, photos, and book scans into editable text 100% in-browser
OCR Image Scanner & Preprocessing Studio
Scan images with advanced Otsu binarization and neural optical character recognition
Screenshot to Text OCR & Snipping Extractor
Paste screenshots directly with Ctrl+V and extract on-screen text instantly
Extract Text from Image & Photo OCR
Detect, isolate, and extract printed text from pictures, signs, and labels
PDF to Text Extractor & Document OCR
Extract embedded text and search digital PDF documents 100% in-browser
OCR PDF Document Scanner & Multi-Page Extractor
Scan and extract text from scanned multi-page PDF documents and photocopies
Scanned Document & Receipt Text Extractor
Extract and clean text from scanned invoices, receipts, and archival papers
Table Data Extractor & CSV/Markdown Converter
Extract tabular data from text and convert to editable CSV, JSON, and Markdown
URL & Web Link Extractor from Text
Extract, clean, deduplicate, and group web links and URLs from any text
Email Address Extractor & Filter
Extract, validate, deduplicate, and organize email addresses from text
Phone Number Extractor & International Formatter
Extract and format international and domestic phone numbers from text
AI Text Summarizer & Extractive Condenser
Summarize long articles, essays, and reports into concise key takeaways 100% in-browser
AI Text Rewriter & Tone Stylizer
Rewrite text across Professional, Casual, Concise, Academic, and Creative tones
AI Text Paraphraser & Sentence Restructurer
Paraphrase sentences, swap clauses, and diversify vocabulary with semantic accuracy
AI Grammar, Punctuation & Style Checker
Detect and fix subject-verb mismatch, typos, confusing homophones, and redundancy
AI Text Translator & Multi-Language Dictionary
Translate text across English, Spanish, French, German, Italian, Portuguese, Hindi, and more
AI Text Classifier & Topic Categorizer
Classify articles and documents into Technology, Business, Science, Entertainment, and Politics
AI Keyword Extractor & Keyphrase Finder (RAKE)
Extract high-relevance keywords and multi-word keyphrases using the RAKE algorithm
AI Sentiment & Emotion Valence Analyzer
Analyze positive, neutral, and negative sentiment with emotional tone breakdown
AI Text-to-Speech Natural Voice Synthesizer
Listen to any text read aloud with high-definition natural system voices and pitch tuning
AI Speech-to-Text Live Voice Dictation
Dictate notes, emails, and essays with live real-time microphone voice transcription
AI Image Background Remover & Cutout Studio
Remove image backgrounds and create transparent PNG cutouts 100% in-browser
AI Image Enhancement & Photo Auto-Leveler
Enhance photos with adaptive contrast, vibrance tuning, and unsharp mask sharpening
AI Document & Report Extractive Summarizer
Summarize multi-section documents and markdown reports into structured executive briefs
AI PDF Question Answering & Semantic Passage Finder
Ask questions about your documents and extract relevant passages with page citations
Scientific Calculator & History Tape
Advanced scientific math calculator with trigonometry, hyperbolic, logs, roots, and interactive calculation tape
Scientific & Engineering Notation Studio
Two-way scientific, E-notation, engineering, and SI metric prefix converter
Significant Figures Analyzer & Rounder
Count sig figs, diagnose IUPAC measurement rules, round values, and solve arithmetic propagation
Scientific Unit Conversion Suite
Precision conversion matrix for scientific length, mass, pressure, energy, and temperature
Comprehensive Physics Laboratory & Mechanics Studio
Multi-parameter solver for kinematics, dynamics, work-energy, momentum collisions, gravity, and wave mechanics
General Chemistry Laboratory Studio
Interactive chemistry suite for solution dilutions, ideal gas laws, and molarity calculations
Descriptive & Inferential Statistics Studio
Comprehensive statistical analysis for mean, median, mode, variance, std dev, and quartiles
Fundamental Physical & Chemical Constants Reference
Searchable database of 30+ fundamental CODATA physical constants with 1-click copy
STEM Formula Solver Studio
Interactive STEM formula calculator with step-by-step substitution and unit tags
Molecular Weight Calculator & Chemical Formula Parser
Parse complex chemical formulas with parentheses and hydrates to compute molecular weight and mass %
Molar Mass & Elemental Composition Calculator
Calculate molar mass in g/mol with IUPAC atomic weights and stoichiometry breakdown
Acid-Base pH, pOH & Buffer Solution Studio
Calculate pH, pOH, [H+] and [OH-] concentrations, and Henderson-Hasselbalch buffer solutions
Moles, Particles & STP Gas Volume Converter
Two-way conversion between mass (grams), moles, Avogadro particles, and STP gas volume
Density, Mass & Volume 3-Way Solver
3-way solver for density, mass, and volume with specific gravity and material presets
Radioactive Decay & Isotope Half-Life Studio
Simulate radioactive decay, calculate half-lives elapsed, decay constants, and carbon dating
Nuclear Radiation Dosimetry & Shielding HVL Studio
Calculate radioactivity unit conversions (Bq to Ci), inverse square distance attenuation, and shielding HVL
Astronomy & Celestial Mechanics Laboratory
Calculate orbital velocity, Kepler periods, cosmic distance travel times, black hole event horizons, and telescope optics
Concrete Slab, Footing & Bag Calculator
Calculate cubic yards, meters, and 40lb, 60lb, 80lb concrete bags with waste factor
Brick & Mortar Wall Calculator
Calculate modular bricks, CMU blocks, and mortar bags with door/window deductions
Cement, Sand & Aggregate Mix Ratio Calculator
Calculate cement bags, sand, and gravel for 1:2:3, 1:2:4, and 1:3:6 concrete batching
Sand Volume & Weight Calculator
Calculate cubic yards, tons, and 50lb bags of sand for pavers, masonry, and landscaping
Gravel & Crushed Stone Tonnage Calculator
Calculate tons and cubic yards of crushed stone, pea gravel, and road base
Flooring Calculator & Box Estimator
Estimate square footage, carton boxes, and cutting waste for hardwood, laminate, and LVP
Tile & Grout Calculator
Calculate floor/wall tile counts, box numbers, and grout powder bags with joint width
Wall & Ceiling Paint Calculator
Calculate gallons, quarts, and primer needed for walls and ceilings with door deductions
Construction Material Quantity & BOM Estimator
Generate Bill of Materials (BOM) for framing studs, 4x8 drywall, insulation, and fasteners
Floor & Room Area Calculator
Calculate composite multi-room floor areas in square feet, square meters, and square yards
Room Volume & HVAC Airflow Calculator
Calculate 3D cubic feet, cubic meters, and HVAC cooling BTU sizing requirements
Roofing Shingle & Pitch Calculator
Calculate roof pitch slope multiplier, roofing squares, shingle bundles, and felt rolls
Construction & Renovation Cost Estimator
Estimate total building budget, cost per square foot, and trade breakdown by quality tier
Land Area Converter (Acre, Hectare, Bigha, Guntha)
Convert land measurements across Acres, Hectares, Bighas, Gunthas, Cents, and Sq Ft
Property Area Converter (Carpet vs Built-up vs Super Built-up)
Calculate Carpet Area, Built-Up Area, and Super Built-Up Area with builder loading factors
Home Mortgage & Property Loan Calculator
Calculate monthly PITI mortgage payments with property taxes, home insurance, PMI, and HOA
Rent vs. Buy Property Investment Calculator
Multi-year financial comparison: home equity appreciation vs rent inflation and stock returns
Fuel Cost Calculator
Calculate vehicle fuel costs, gallons or liters needed, and passenger cost splits
Fuel Economy Converter
Convert between US MPG, Imperial UK MPG, L/100km, and km/L with annual fuel budgets
Gas Mileage Calculator
Calculate real-world tank-to-tank fuel efficiency and compare against EPA window stickers
Road Trip Fuel & Stop Planner
Plan road trip gas expenses, highway vs city splits, cargo drag, and refuel stops
Travel Distance, Speed & Time Calculator
Solve for travel distance, vehicle speed, or driving duration with traffic buffers
Horsepower Converter
Convert Mechanical HP, Metric PS, Kilowatts, and Wheel Horsepower with drivetrain loss
Torque Converter & Power Curve
Convert lb-ft, N·m, and kg·m with horsepower calculations at specified RPM
Engine Displacement Calculator
Calculate engine displacement in CC, Liters, and CID from bore, stroke, and cylinder count
Transmission Gear Ratio & Speed Calculator
Calculate top speeds per gear, shift RPM drops, and effective differential ratios
Engine RPM & Speed Calculator
Calculate engine RPM from vehicle speed, gear ratio, final drive, and tire size
Tire Size Comparison & Speedometer Error
Compare tire diameters, section widths, sidewall heights, and speedometer calibration
Tire Pressure Converter & Temp Compensation
Convert PSI, Bar, and kPa with cold vs warm ambient temperature compensation
Automotive Speed & Stopping Distance Converter
Convert mph, km/h, m/s, and knots with emergency braking stopping distances
EV Charging Cost & Time Calculator
Calculate electric vehicle charging costs, kWh needed, and Level 1/2/DCFC times
EV Range & Climate Penalty Calculator
Estimate real-world electric car driving range under freezing cold, heat, and highway speeds
Car Loan, Financing & Amortization Calculator
Calculate monthly auto loan payments, interest, sales tax, and early payoff savings
Travel Budget Calculator
Comprehensive vacation and trip budget estimator with categorical cost breakdowns
Trip Cost Calculator
Actual travel expenditure tracker with planned budget variance and passenger expense splitting
Smart Packing List Generator
Dynamic TSA-compliant packing checklist customized by trip duration, climate, and activities
Travel Fuel Cost Calculator
Road trip gas calculator with highway tolls, parking expenses, and passenger carpool split
Flight Time Calculator
Great-Circle flight duration, aviation distance, cruising speed, and jetstream wind estimator
Travel Distance Calculator
Global city-to-city geographic distance calculator with straight-line and road transit factors
Travel Time Calculator
Multi-modal journey duration comparison: Commercial flight, high-speed rail, driving, and bus
Jet Lag Recovery Calculator
Circadian rhythm adjustment planner with sleep shift schedules, light exposure, and melatonin timing
Travel Time Zone Converter
Cross-border time zone converter with travel day shifts and local business hour overlap
Travel World Clock
Multi-city global clock dashboard tracking live destination times, dates, and UTC offsets
Travel Currency Converter
Foreign exchange converter with credit card FX fee markups, ATM surcharges, and local tipping etiquette
Walking & Sightseeing Pace Calculator
Estimate walking, hiking, and sightseeing transit times using Naismith's Rule and photo stop buffers
Trip Duration & Visa Stay Calculator
Calculate trip days, nights, weekend shares, vacation countdown, and Schengen 90/180-day visa stay compliance
Latitude / Longitude Converter
Convert geographic coordinates between Decimal Degrees (DD), DMS, and DDM
Universal Coordinate Converter
Convert between WGS84, Universal Transverse Mercator (UTM), and ECEF Cartesian grid
GPS Format Converter
Convert coordinates to NMEA 0183 ($GPGGA), Geohash, Plus Codes, and GPX XML
DMS to Decimal Degrees Converter
Parse messy coordinate strings with symbols and convert to normalized Decimal Degrees
Distance Between Coordinates Calculator
Calculate accurate distance between two coordinates using Haversine & Vincenty WGS84
Great Circle Distance Calculator
Compare curved Great Circle routes against constant-heading Rhumb Lines with waypoints
Bearing & Azimuth Calculator
Calculate forward azimuth, reciprocal back bearing, and 32-point compass rose direction
Decimal Degrees Precision Analyzer
Inspect coordinate decimal places and real-world ground resolution from km to mm
Elevation & Barometric Altitude Calculator
Calculate barometric altitude, water boiling points, horizon distance, and trail slopes
Geographic Time Zone & Solar Noon Finder
Find solar time zones, local solar noon, Equation of Time, and solar declination
World Country Geographic Utilities
Searchable geographic database of 240+ countries with capitals, coordinates, and codes
Geographic Land Area Converter
Convert geographic land measures across km², hectares, acres, dunams, and square miles
BMI Calculator
Calculate Body Mass Index using WHO classification, Oxford formula, and BMI Prime
Body Fat Calculator
Estimate body fat percentage and lean muscle mass using US Navy tape circumference
Ideal Body Weight Calculator
Compare ideal body weight across Devine, Robinson, Miller, and Hamwi medical formulas
Water Intake Calculator
Calculate daily hydration requirements based on weight, exercise, and climate
BMR Calculator
Calculate Basal Metabolic Rate using Mifflin-St Jeor, Harris-Benedict, and Katch-McArdle
TDEE Calculator
Calculate Total Daily Energy Expenditure based on physical activity multipliers
Calorie Deficit & Surplus Calculator
Plan daily calorie targets for mild, standard, or aggressive weight loss and lean bulking
Macro Calculator
Calculate daily protein, carbohydrate, and fat gram targets for fitness goals
Pace Calculator
Universal pace and speed converter between min/km, min/mile, km/h, and mph
Running Pace & Race Time Predictor
Predict 5K, 10K, Half Marathon, and Marathon race finish times using Riegel formula
Running Speed & Treadmill Incline Calculator
Convert treadmill speed, pace, and calculate VO2 aerobic cost of incline gradient
Cycling Speed & Gear Ratio Calculator
Calculate cycling speed based on cadence, chainring, cog, and tire circumference
Target Heart Rate Zone Calculator
Calculate 5 training heart rate zones using Karvonen HRR and Tanaka HRmax
One Rep Max (1RM) Calculator
Calculate 1RM strength and percentage training load table across 7 clinical formulas
Protein Calculator
Calculate daily protein requirements for muscle growth, cutting, and endurance
Recipe Scaler
Scale recipe ingredients by double, halve, or custom multiplier with culinary fractions
Recipe Serving Calculator
Adjust recipe ingredient quantities from original yield to exact dinner guest count
Ingredient Ratio Calculator
Calculate Baker's percentages, sourdough hydration, and classic culinary golden ratios
Cooking Unit Converter
Universal culinary converter between cups, tablespoons, teaspoons, fl oz, mL, and grams
Cups to Grams Converter
Convert cups to exact grams and ounces for flour, sugar, butter, and baking staples
Grams to Cups Converter
Convert European metric gram weights into US and metric cups and tablespoons
Tablespoon & Teaspoon Converter
Convert tablespoons, teaspoons, fluid ounces, and milliliters with fractional spoons
Kitchen Timer
Multi-alarm kitchen timer with audio chime and presets for eggs, pasta, steaks, and tea
Oven Temperature Converter
Convert oven temperatures between Celsius, Fahrenheit, Gas Mark, and Fan Convection
Recipe Nutrition Calculator
Calculate recipe calories, protein, carbohydrates, fats, and per-serving nutrition
Recipe Calorie Calculator
Calculate total batch calories, per-portion energy, and caloric density per 100g
Food Cost Calculator
Calculate restaurant food cost percentage, menu pricing, and gross profit margins
Recipe Cost Calculator
Calculate batch recipe costs and portion pricing factoring trim yield and waste shrinkage
Discount Calculator
Calculate stacked percentage discounts, promo codes, and dollar-off coupons
Sale Price Calculator
Compute final register total with markdown percentage and local sales tax
Sales Tax Calculator
Calculate sales tax or reverse-extract pre-tax price from receipt totals
Product Comparison Calculator
Analyze Cost-Per-Use (CPU) and lifetime value across competing purchases
Tip & Gratuity Calculator
Calculate restaurant gratuity, party splits, and whole dollar roundups
Split Bill Calculator
Split restaurant checks individually or shared with fair proportional tax and tip
Unit Price Calculator
Compare grocery package sizes and detect shrinkflation with unit pricing
Price Per Weight Calculator
Convert rates across $/lb, $/oz, $/kg, $/100g and calculate scale weight totals
Shopping Savings Calculator
Tally cumulative cart discounts, coupon codes, and credit card cashback
Shopping List Generator
Interactive grocery checklist sorted by supermarket aisle with budget tracker
Random Choice Picker
Unbiased random decision spinner for meals, activities, and everyday choices
Decision Maker Matrix
Multi-criteria weighted decision analysis (MCDA) for smart purchases
Focal Length Calculator
Calculate 35mm equivalent focal length and field of view angles
Depth of Field Calculator
Calculate hyperfocal distance, near/far sharpness limits, and depth of field
Aperture Calculator
Calculate entrance pupil diameter, light transmission, and diffraction limits
Photography Crop Calculator
Calculate sensor crop factor equivalency for focal length and background blur
Exposure Calculator
Calculate Exposure Value (EV100), Sunny 16 rule, and ND filter multipliers
Shutter Speed Calculator
Calculate Astrophotography Rule of 500, NPF pinpoint stars, and motion freeze
Photo File Size Calculator
Estimate RAW/JPEG photo file sizes and SD memory card capacity
Aspect Ratio Calculator
Calculate camera aspect ratios, sensor reductions, and proportional resizing
Image Resolution Calculator
Calculate total megapixels and maximum archival print sizes at 300 DPI
Pixel Dimension Calculator
Find required pixel dimensions from target physical print sizes and DPI
DPI Calculator
Calculate commercial printing DPI and halftone line screen (LPI) rules
PPI Calculator
Calculate screen Pixels Per Inch (PPI) and Apple Retina viewing distance
Print Size Calculator
Evaluate photo print lab presets (4x6 to 24x36) for sharpness and quality
EXIF Viewer
100% in-browser client-side EXIF camera metadata and lens inspector
Gaming Sensitivity Converter
Convert mouse sensitivity between Valorant, CS2, Apex, Overwatch 2, and Fortnite
Mouse DPI Calculator
Analyze sensor DPI, pixel skipping risk, and 180-degree mousepad flick distance
eDPI Calculator
Calculate effective DPI (DPI x Sens) and compare with esports pro player benchmarks
Game Resolution Converter
Calculate 4:3 stretched resolutions, player model width magnification, and FPS gains
Game Aspect Ratio Converter
Compare 16:9, 16:10, 4:3, 21:9 Ultrawide, and 32:9 gaming aspect ratios
FOV Calculator
Convert horizontal and vertical FOV across CS2, Valorant, Overwatch, and Unreal Engine
FPS Calculator
Calculate frame time (ms), 1% low micro-stutter, and system input latency budget
Gaming Performance Calculator
Estimate CPU/GPU bottlenecks, resolution scaling, and DLSS/FSR frame rate boosts
XP Calculator
Calculate battle pass progression, matches remaining, and daily grind requirements
Game Time Calculator
Estimate campaign finish dates and schedule healthy gaming sessions
Game Currency Calculator
Convert V-Bucks, Robux, Valorant Points, and COD Points to real-world money
Build & Stat Calculator
Optimize RPG combat damage, crit multiplier, armor damage reduction, and EHP
Universal Subtitle Converter (SRT, VTT)
Convert, clean, and validate subtitle files between SubRip (SRT) and WebVTT formats
SRT to VTT Subtitle Converter
Convert SubRip .srt subtitles to HTML5 WebVTT format for modern web video players
VTT to SRT Subtitle Converter
Convert WebVTT captions into universal SubRip .srt files for VLC, YouTube, and media players
Subtitle Time Shifter & Audio Sync
Resync out-of-sync subtitles by shifting timestamps forward or backward in milliseconds
Subtitle Merger & Bilingual Combiner
Concatenate split subtitle files or create bilingual dual-language subtitles
Audio Bitrate & File Size Calculator
Calculate uncompressed PCM audio bitrates and estimate MP3, AAC, and FLAC file sizes
Frame Rate Converter & SMPTE Timecode Calculator
Convert frame counts to SMPTE timecodes and calculate PAL/NTSC speedup drift
Media Duration & Playback Speed Calculator
Sum multi-track media segment durations and calculate playback speedup time savings
Client-Side Media File Inspector
Inspect video and audio metadata, codecs, dimensions, and playback duration in browser
Playlist & Video Chapter Utilities
Generate standard M3U/M3U8 playlists and YouTube description timestamp chapters
Pomodoro Focus Timer & Productivity Cycles
Boost daily focus with customized 25/5 Pomodoro intervals, cycle trackers, and audio chimes
Full-Screen Visual Countdown Timer & Alarm
Countdown to zero with large digital LED readouts, loop mode, and alarm alerts
Millisecond Precision Stopwatch & Lap Split Timer
Measure elapsed time with millisecond precision, lap split deltas, and CSV export
Daily Habit Streak & Consistency Tracker
Track daily habits, measure streaks, and build unstoppable consistency in browser memory
Interactive Reusable Checklist Generator
Create reusable interactive checklists with completion meters and Markdown export
Prioritized To-Do List & Daily Task Manager
Manage daily tasks with P1-P4 priority tags, status filtering, and local persistence
Eisenhower 4-Quadrant Priority Matrix
Categorize tasks into Urgent vs Important quadrants for strategic time management
Daily Time Blocking & Deep Work Schedule Generator
Plan daily hours with Cal Newport style time-boxing, deep work ratios, and break buffers
Timesheet & Overtime Working Hours Calculator
Calculate weekly worked hours, unpaid lunch deductions, overtime, and gross wages
Meeting Duration & Live Cost Burn Rate Calculator
Quantify organizational meeting costs, live dollar burn rate ticker, and attendee value
Global Time Zone Meeting Planner & Overlap Matrix
Find optimal international meeting hours across global participant cities and timezones
Unbiased Random Choice & Winner Draw Picker
Draw unbiased random choices, select giveaway winners, and break decision deadlocks
Multi-Criteria Decision Analysis (MCDA) Matrix
Score competing options against weighted criteria to make objective mathematical choices
Balanced Team & Group Roster Generator
Split participants into fair, balanced teams using snake-draft skill distribution
Invoice Generator
Professional printable PDF invoice maker with customizable line items, taxes, and multi-currency
Receipt Generator
Official sales receipt maker and proof of payment generator
Quotation Generator
Create formal business price quotes, scope proposals, and cost estimates
Purchase Order Generator
Formal procurement purchase order generator with vendor, shipping, and payment terms
Business Letter Generator
Compose formal business letters with block, semi-block, and memo layouts
Email Signature Generator
Create professional HTML email signatures for Gmail, Outlook, and Apple Mail
Email Template Formatter
Industry-standard business email templates with dynamic variable merge tags
Business Card Generator
Design 300 DPI print-ready standard US, EU, and square business cards
Meeting Agenda Generator
Calculate meeting time slot allocations, schedule chronologies, and topic goals
Meeting Minutes Formatter
Document formal meeting minutes, board resolutions, and action item deliverables
Document Templates
Standard legal and business contract templates for NDAs, SOWs, and MOUs
Expense Calculator
Track business expenses with tax-deductible metrics and category breakdowns
Business Expense Splitter
Settle shared team and partner expenses with minimum cash flow debt simplification
E-commerce Profit & Net Margin Calculator
Calculate net profit, profit margins, ROI, and customer acquisition cost across online sales
E-commerce Margin & Markup Calculator
Convert seamlessly between cost, selling price, gross profit margin, and percentage markup
Marketplace Fee & Seller Payout Calculator
Compare seller fees and net bank payouts across Amazon, eBay, Etsy, Shopify, and TikTok
Target Margin Selling Price Calculator
Reverse-engineer the exact selling price required to lock in your desired net profit margin
Product Landed Cost Calculator
Calculate true unit landed cost with manufacturing, ocean freight, customs tariffs, and drayage
Shipping Cost & Dimensional Weight Calculator
Calculate DIM volumetric weight vs actual weight to prevent carrier shipping surcharge penalties
E-commerce Break-Even Volume Calculator
Calculate monthly order volume and revenue needed to cover fixed store overhead
E-commerce Discount & Margin Guard Calculator
Model promotional discounts, BOGO, and tiered volume deals with margin erosion checks
Wholesale Pricing & Volume Tier Calculator
Design B2B wholesale price tiers, bulk volume discounts, and batch profits
Retail MSRP & Keystone Pricing Calculator
Calculate suggested retail MSRP with keystone multipliers and charm psychological pricing
E-commerce SKU Matrix Generator
Generate standardized, multi-variant SKU codes for colors, sizes, and product lines
Product Barcode Generator
Generate and download high-resolution vector SVG barcodes (CODE128, EAN-13, UPC-A)
EAN & UPC Barcode Checksum Tools
Compute GS1 Modulo-10 check digits, validate barcodes, and lookup issuing country prefixes
Product Title Formatter & SEO Optimizer
Format high-converting product titles adhering to Amazon, Shopify, eBay, and Etsy character limits
Universal QR Code Generator
Create custom, high-resolution vector SVG and PNG QR codes with logo overlay and styling
Online QR Code Scanner
Scan QR codes instantly via webcam or image upload with zero server transmissions
Wi-Fi QR Code & Guest Card Generator
Generate Wi-Fi connection QR codes and printable tabletop tent cards for guests
URL & Campaign UTM QR Generator
Generate high-intent website QR codes with automated UTM tracking parameters
Plain Text QR Code Generator
Encode plain text, multi-line instructions, and serial numbers into scannable QR codes
Email Pre-Composed QR Generator
Generate QR codes that launch pre-filled email drafts directly in user mail apps
Phone Call & SMS QR Generator
Generate instant tap-to-call and pre-filled SMS text message QR codes
vCard Digital Business Card QR Generator
Create digital business card QR codes that save contacts directly to smartphone address books
Universal 1D Barcode Generator
Generate high-resolution vector SVG and PNG barcodes across 8 industry standards
Online Barcode Scanner
Scan 1D barcodes via webcam or uploaded product image with audio verification chime
EAN Retail Barcode Generator (EAN-13 & EAN-8)
Generate official GS1-compliant EAN-13 and EAN-8 barcodes with automated check-digit calculation
UPC Retail Barcode Generator (UPC-A & UPC-E)
Generate standard North American UPC-A retail barcodes with auto Modulo-10 checksums
Code 128 Alphanumeric Barcode Generator
Create high-density alphanumeric barcodes for logistics, warehouse bins, and shipping labels
ISBN Tools & Bookland Barcode Generator
Inspect International Standard Book Numbers, verify check digits, and generate book barcodes
ISBN-10 ↔ ISBN-13 Universal Converter
Convert bidirectionally between legacy 10-digit ISBN and modern 13-digit ISBN
UUID Generator (V4 & V1)
Generate cryptographically secure RFC 4122 random Version 4 and Version 1 UUIDs
GUID Generator & C# / SQL Formatter
Generate Microsoft Globally Unique Identifiers formatted for C#, SQL, and C++
Salary Calculator & Pay Period Converter
Convert annual salary to hourly wage, monthly, bi-weekly, weekly, and PTO-adjusted earnings
Hourly Wage to Annual Salary Calculator
Convert hourly pay rate to full-time annual salary with overtime, bonus, and contractor day rates
Overtime Pay & Premium Rate Calculator
Calculate FLSA 1.5x time-and-a-half, 2.0x double-time, and holiday premium wage payouts
Take-Home Pay & Net Salary Calculator
Estimate net paycheck income after federal taxes, FICA, state withholdings, and 401(k)
Work Hours & Timesheet Calculator
Calculate daily and weekly work hours, lunch break deductions, overtime, and gross earnings
Notice Period & Last Working Day (LWD) Calculator
Calculate official last working day, calendar vs business days countdown, and leave buyout
Total Career Experience & Tenure Calculator
Calculate cumulative work experience across multiple jobs with overlap deduplication and gap analysis
ATS Resume Formatter & Markdown Structurer
Structure clean, recruiter-friendly, ATS-compliant resume sections with instant Markdown export
Resume PDF & Document Text Extractor
Extract clean, unformatted plain text from PDF and document resumes client-side
CV Word Counter & ATS Density Audit
Audit CV word count, page length estimation, recruiter scan time, and action verb density
Job Application Pipeline Tracker
Track job search applications, stages, interview dates, salary targets, and export CSV
STAR Method Interview Response Timer
Practice behavioral interview responses with 2-minute STAR timer and randomized prompts
Professional Workplace & Career Email Generator
Generate tailored interview follow-ups, resignation letters, salary negotiations, and thank you notes
Agricultural Land Area Converter
Convert acres, hectares, gunthas, bighas, cents, kanals, and international land units
Farm Parcel Area & Boundary Perimeter Calculator
Calculate arable field surface area, headlands, buffer zones, and boundary fence length
Agricultural Seed Rate & Plant Population Calculator
Calculate required seeding rate (kg/ha & lbs/acre), seed spacing, and total seed bags
Fertilizer NPK Dosage & Split Application Calculator
Calculate commercial fertilizer quantities (Urea, DAP, SSP, MOP) and split application schedules
Crop Yield Estimation & Harvest Moisture Adjuster
Estimate grain/fruit yield, harvest moisture shrinkage, combine losses, and harvest revenue
Irrigation Runtime & System Capacity Calculator
Calculate drip/sprinkler runtimes, application rates, total water volume, and pump horsepower
Crop Water Requirement (ETc) & Net Irrigation Calculator
Calculate FAO-56 crop evapotranspiration (ETc), effective rainfall credit, and gross water demand
Agricultural Rainfall & Rainwater Harvesting Converter
Convert rainfall depth (mm, inches) to field volume (m³/ha, gal/acre) and roof catchment harvest
Agronomic Temperature & Growing Degree Days (GDD) Calculator
Convert °C/°F/K, calculate Growing Degree Days (GDD), and assess soil germination viability
Agricultural Solar Energy & Solar Irrigation Pump Calculator
Size off-grid solar arrays, estimate daily kWh yield, and size solar irrigation pumps
Farm Carbon Footprint & Greenhouse Gas (GHG) Calculator
Calculate Scope 1, 2, and 3 farm emissions, soil carbon sequestration, and net CO2e
Farm Energy Consumption & Equipment Audit Calculator
Audit farm electrical equipment kWh, peak demand load, and annual operating costs
Cosmic & Astronomical Distance Converter
Convert kilometers, miles, AU, light-years, parsecs, and gigaparsecs with photon transit times
Light-Year & Interstellar Distance Converter
Convert light-years to AU, km, miles, parsecs, and estimate probe transit times across propulsion drives
Astronomical Unit (AU) Converter & Solar System Scale
Convert AU to km, miles, light-minutes, and compare Solar System planetary orbits
Orbital Period & Satellite Trajectory Calculator
Calculate orbital periods, mean velocities, apoapsis/periapsis speeds, and orbital energy
Escape Velocity & Celestial Launch Energy Calculator
Calculate surface and orbital escape velocity, launch kinetic energy, and Schwarzschild radius
Celestial Surface Gravity & Gravitational Force Calculator
Calculate surface gravity (m/s²), Earth g-forces, Newtonian attraction, and Solar System weight
Kepler's Laws & Vis-Viva Orbital Mechanics Calculator
Solve Kepler's 3 laws of planetary motion, orbital ellipses, periapsis/apoapsis speeds, and areal velocity
Telescope Magnification, Optics & Resolving Power Calculator
Calculate magnification, exit pupil, true field of view, focal ratio, and Dawes' resolving limit
Star Distance, Stellar Parallax & Distance Modulus Converter
Calculate stellar distance from parallax angle, distance modulus (m-M), and cosmological redshift
Cosmic Travel Time & Relativistic Spaceflight Calculator
Calculate spaceflight transit times, Einstein time dilation, and ship vs Earth elapsed time
Ohm's Law & DC Power Calculator
Solve voltage, current, resistance, and electrical power dissipation in real time
AC Electrical Power Calculator (1-Phase & 3-Phase)
Calculate real power (kW), apparent power (kVA), reactive power (kVAR), and phase angle
Power Factor Correction & Capacitor Sizing
Calculate required kVAR capacitor bank and microfarads (µF) to avoid utility penalties
Electrical Load Schedule & Panel Sizing
Schedule equipment wattage, apply NEC 125% continuous rules, and size service panels
Voltage Drop Calculator & NEC Compliance
Calculate feeder voltage drop, line losses, and verify NEC 3% and 5% compliance
Wire Size & Conductor Ampacity Calculator
Determine minimum copper and aluminum AWG gauge based on NEC Table 310.16
Resistor Color Code & SMD Decoder
Decode 4-band, 5-band, and 6-band color codes, plus 3-digit and 4-digit SMD resistors
Capacitor Reactance & RC Circuit Calculator
Calculate capacitive reactance (Xc), RC time constant (τ), and stored energy in Joules
Inductor Reactance & RL Circuit Calculator
Calculate inductive reactance (XL), RL time constant (τ), and magnetic stored energy
Torque, Shaft Power & Shear Stress Calculator
Calculate torque (T = F · r), rotational power (kW & HP), and shaft torsional shear stress
Gear Ratio & Gear Train Speed Calculator
Calculate single and compound gear reduction, output RPM, torque multiplication, and efficiency
Machining Spindle RPM & Cutting Speed Calculator
Calculate CNC spindle RPM from cutting speed (Vc / SFM) and AC motor synchronous speeds
Mechanical Stress & Yield Safety Factor Calculator
Calculate normal and shear stress (σ = F/A) in MPa and PSI with yield safety factors
Tensile Strain & Poisson Ratio Calculator
Calculate engineering strain (ε = ΔL / L), microstrain (με), and lateral Poisson contraction
Beam Deflection & Bending Stress Calculator
Calculate simply supported & cantilever beam bending moment, midspan sag, and outer fiber stress
Pipe Flow, Head Loss & Pressure Drop Calculator
Calculate Darcy-Weisbach friction head loss, pressure drop (kPa / PSI), and volumetric flow rate
Reynolds Number & Flow Regime Calculator
Calculate Reynolds number (Re) and identify laminar, transitional, or turbulent flow
Fluid Continuity & Torricelli Efflux Calculator
Calculate conservation of mass (A1v1 = A2v2) and Torricelli orifice discharge velocity
Heat Transfer Calculator (Conduction, Convection, Radiation)
Calculate 1D thermal conduction, convective cooling, and Stefan-Boltzmann radiation
Engineering Unit Converter (Pressure, Power, Energy, Viscosity)
Convert pressure, power, energy, and dynamic viscosity across metric and Imperial units
Word & Lexical Diversity Counter
Count words, unique vocabulary terms, lexical diversity, and keyword frequency
Character & Byte Length Counter
Count characters with and without spaces, UTF-8 byte weights, and social limit checks
Syllable & Polysyllabic Word Counter
Count syllables, identify polysyllabic words, and calculate average syllables per word
Sentence & Paragraph Structure Counter
Count sentences, paragraphs, average sentence length, and structural balance
Reading Time & Readability Calculator
Calculate estimated reading time at custom WPM speeds and Flesch Reading Ease scores
Speaking Time & Speech Pacing Calculator
Calculate presentation speech delivery time, keynote pacing, and podcast durations
Universal Text Case Converter
Convert text to UPPERCASE, lowercase, Title Case, camelCase, snake_case, and kebab-case
Script Transliteration Tool (Cyrillic, Greek, Devanagari)
Convert non-Latin scripts (Russian, Greek, Hindi) into phonetic Latin characters
Romanization & Pinyin/Romaji Converter
Convert numbered Chinese Pinyin to tone marks, and Japanese Romaji to Hiragana
Phonetic Transcription & IPA Converter
Translate English words to International Phonetic Alphabet (IPA) and Russell Soundex
Alphabet & Historic Script Converter
Convert Latin letters into Norse Elder Futhark Runes, Small Caps, and Fraktur Gothic
Unicode Inspector & Code Point Converter
Inspect character code points (U+XXXX), UTF-8 bytes, and HTML decimal/hex entities
Morse Code Translator & Audio Synthesizer
Translate text to Morse code dots and dashes with Web Audio API 650Hz audio playback
Grade 1 & Grade 2 Braille Translator
Translate text and numbers into 6-dot Unicode Braille patterns (U+2800 to U+28FF)
NATO Phonetic Alphabet & Radiotelephony
ICAO / NATO aviation phonetic spelling alphabet (Alfa, Bravo, Charlie) with audio pronunciations
Client-Side Text-to-Speech (TTS) Reader
Read written text aloud using natural browser speech synthesis with pitch and rate controls
WCAG Color Contrast & APCA Checker
Audit foreground and background color contrast against WCAG 2.1 AA and AAA standards
Color Blindness & Vision Deficiency Simulator
Simulate color blindness across 8 vision deficiency conditions for swatches and images
Accessible Font Size & Fluid Typography Calculator
Calculate modular typographic scales, fluid clamp() formulas, and viewing distance minimums
Multi-Algorithm Readability & Plain Language Checker
Audit reading levels with Flesch-Kincaid, Gunning Fog, SMOG, and WCAG 3.1.5 plain language criteria
Alt Text Decision Tree & Anti-Pattern Auditor
Generate compliant alt text and audit descriptions for screen reader accessibility
WAI-ARIA 1.2 Syntax & Semantic Role Validator
Validate ARIA roles, detect redundant HTML5 semantics, and ensure required attribute compliance
Theme Palette Matrix & Contrast Validator
Audit full design system color palettes for pairwise WCAG AA and AAA contrast compatibility
WCAG 1.4.12 Text Spacing & Flow Validator
Verify typography adaptability with WCAG 2.1 SC 1.4.12 line, paragraph, and letter spacing rules
Keyboard Navigation & Focus Trap Testing Sandbox
Interactive testing sandbox for keyboard navigation, focus visible rings, and modal traps
Image Accessibility & Text-in-Image Analyzer
Audit raster graphics for WCAG 1.1.1 non-text content and WCAG 1.4.5 images-of-text compliance
RFC 5322 Email Validator & Deliverability Auditor
Validate syntax, detect disposable inbox domains, spot role accounts, and catch domain typos 100% in-browser
Bulk Email Extractor & Address Scraper
Harvest, deduplicate, and sort email addresses from raw text, HTML source code, or server logs
HTML Email Signature Generator
Design responsive, cross-client HTML email signatures compatible with Gmail, Outlook, and Apple Mail
High-Converting Email Subject Line Generator & Spam Tester
Generate high-open-rate subject lines with real-time spam scoring, character counts, and urgency triggers
Professional Email Formatter & Draft Beautifier
Normalize messy drafts, balance paragraph spacing, and generate clean plain text and styled HTML emails
HTML Email Preview & Responsiveness Sandbox
Test HTML newsletters across desktop (600px), tablet (480px), and mobile (375px) viewports with dark mode & image blocking audits
Email Header Analyzer & MTA Relay Trace Forensics
Parse RFC 5322 email headers, trace MTA relay hops, and verify SPF, DKIM, and DMARC authentication
RFC 2368 Mailto Link & Anchor Code Generator
Create URL-encoded mailto links with pre-filled To, CC, BCC, Subject, and email body parameters
Anti-Spam Email Obfuscator & Crawler Cloaker
Protect your email address from scrapers and harvesting bots using 5 encoding and CSS defense techniques
Business & Outreach Email Template Generator
Professional customizable email templates for sales outreach, invoice reminders, meetings, and job offers
Commercial Printing DPI & Halftone Screen Calculator
Calculate dots per inch (DPI), viewing distance visual acuity, and offset press LPI halftone rules
Print Size & Camera Resolution Calculator
Determine maximum sharp photo print dimensions across camera megapixels and lab paper standards
Image Print Size & Multi-DPI Quality Calculator
Upload image files in-browser to calculate exact printable physical dimensions at 300, 240, 150, and 72 DPI
International Paper Size Converter & Standards Database
Convert dimensions between ISO 216 (A/B/C), ANSI, ARCH, and JIS standards in mm, cm, inches, points, and pixels
ISO 216 A-Series Paper Converter & GSM Weight Calculator
Calculate ISO 216 A0 to A10 folding subdivisions, surface area in m², and sheet / ream weight from paper GSM
ISO & Japanese JIS B-Series Paper Size Converter
Compare international ISO B-series geometric mean dimensions against Japanese JIS B sizes
US Letter to A4 Paper Size Converter & Scaling Calculator
Calculate dimension deltas, aspect ratios, and shrink-to-fit scaling percentages between US Letter and ISO A4
Printable Passport Photo Sheet Generator
Create 300 DPI multi-up passport photo sheets for standard 4x6 photo prints adhering to US, UK, and Schengen specs
ID & Badge Photo Sheet Grid Generator
Generate printable tile grids for employee badges, student IDs, visa applications, and wallet prints
PDF Print Layout & Booklet Imposition Generator
Calculate 2-up saddle-stitch booklet signature page pairings and physical sheet requirements
Pre-Press Bleed, Trim & Safe Zone Calculator
Calculate total canvas size with 3mm / 0.125" bleed, trim lines, safe content zones, and CSS @page rules
Book Binding Spine Width & Print Margin Calculator
Calculate book spine bulk thickness, inner gutter margins, and paper creep for perfect bound & saddle stitch books
URL Encoder (Percent-Encoding)
Encode text and URLs into RFC 3986 percent-encoded strings with multiple standard modes
URL Decoder (Percent-Decoding)
Decode percent-encoded URLs, hex sequences, and plus signs into readable text
URL Component Parser & Inspector
Deconstruct URLs into protocol, hostname, port, path segments, query parameters, and hash
URL Tracking Parameter Cleaner & Sanitizer
Strip UTM tags, fbclid, gclid, and marketing telemetry from web links for privacy
URL & Link Extractor
Scrape and extract HTTP/HTTPS links, mailto emails, and tel phone numbers from text
Query String Parser & JSON Serializer
Parse URL query strings into key-value pairs, nested bracket objects, and JSON
UTM Campaign Link Builder
Build trackable Google Analytics 4 (GA4) campaign URLs for ads, email, and social media
Bulk UTM Parameter & Matrix Generator
Generate multi-channel UTM campaign matrices and export tracking links to CSV
SEO URL Slug & Permalink Generator
Transform titles and headlines into search-engine-friendly, clean permalink slugs
Mobile App Deep Link & Universal Link Generator
Generate direct app URI schemes and fallback web links for WhatsApp, Telegram, Twitter, and custom apps
RFC 2368 Mailto Link & HTML Anchor Generator
Build RFC 2368 compliant mailto links with To, CC, BCC, subject, and prefilled body
RFC 3966 Tel URI & Click-to-Call Link Generator
Create RFC 3966 click-to-call tel links and SMS text links with E.164 phone formatting
CSPRNG Random Number Generator
Generate cryptographically unbiased random integers and decimal numbers with statistical distribution analysis
Cryptographic Random String Generator
Generate high-entropy alphanumeric strings, API tokens, salts, and custom delimited codes
Random Choice Picker & Winner Draw
Unbiased random picker for contests, giveaways, team draws, and decision making
Interactive Decision Wheel Spinner
Customizable spinning wheel with realistic physics, deceleration inertia, and sound effects
3D Coin Flip & Probability Simulator
Simulate single or bulk coin tosses with 3D animation, streak analysis, and fairness tracking
Tabletop Polyhedral Dice Roller
Roll polyhedral tabletop RPG dice (d4, d6, d8, d10, d12, d20, d100) with flat modifiers and crit tracking
Secure Password Generator & Entropy Analyzer
Generate high-entropy uncrackable passwords, memorable Diceware passphrases, and PIN codes
Username & Online Handle Generator
Generate creative gamer handles, tech aliases, aesthetic usernames, and brand handles
Realistic International Name Generator
Generate authentic multi-cultural human names and fantasy character identities
UUID & GUID Generator (RFC 4122 v4 & RFC 9562 v7)
Generate cryptographically random UUID v4 and monotonic time-ordered UUID v7 identifiers
Balanced Team & Roster Generator
Split players or coworkers into fair, skill-balanced teams with creative squad themes
Group Partition & Random Splitter
Divide people, tasks, or items into equal random groups with flexible remainder handling
Lorem Ipsum Placeholder Text Generator
Generate dummy placeholder copy in classical Cicero Latin, Developer Tech, Corporate, and Hipster styles
Harmonic Color Palette Generator
Generate aesthetic color palettes with swatch locking, color harmonies, and WCAG contrast scoring
CSS & SVG Gradient Generator
Design linear, radial, and conic gradients with live preview canvas and CSS code export
Universal QR Code Generator (ISO/IEC 18004)
Generate high-resolution QR codes for websites, text, Wi-Fi networks, and digital business cards
Universal 1D Barcode Generator (Code 128, EAN, UPC)
Generate industry-standard 1D retail, logistics, and inventory barcodes with GS1 checksums
MIME Type & Media Type Lookup
Search IANA media types, file extensions, and Content-Type HTTP headers with charset specifications
HTTP Status Code Lookup & Reference
RFC 9110 HTTP status codes directory with troubleshooting guides, cacheability, and browser behaviors
HTTP Method Reference & REST Verbs Guide
RFC 9110 HTTP request methods matrix with safety, idempotency, caching, and REST best practices
HTML Entity Lookup & Character Encoder
W3C HTML5 named character references, decimal codes, hex escapes, and interactive encoder
Unicode Lookup & Character Inspector
Inspect any character or code point: U+XXXX hex, UTF-8 bytes, UTF-16 surrogates, and block names
Emoji Lookup & Unicode Search
Search Unicode 15.1 emojis by name, keyword, and shortcode with 1-click clipboard copy
CSS Color Code Reference & Contrast Checker
W3C CSS Color Module Level 4 named colors with HEX, RGB, HSL, and WCAG contrast scoring
ISO Country Code Lookup (ISO 3166-1)
ISO 3166-1 Alpha-2, Alpha-3, numeric codes, national flags, calling codes, and capitals
ISO Currency Code Lookup (ISO 4217)
ISO 4217 world currency codes, symbols, numeric identifiers, and decimal subdivisions
ISO Language Code Lookup (ISO 639)
ISO 639-1 and 639-2 language codes, native autonyms, text direction, and language families
Global Time Zone Lookup & Offset Guide
Interactive time zone lookup indexed by UTC offsets, abbreviations, and live digital clocks
IANA Time Zone Database & Intl Helper
Canonical IANA tz database identifiers (Olson database) with JavaScript Intl code generators
File Extension Lookup & Magic Bytes Directory
Search file extensions, format specifications, developer organizations, and magic byte signatures
CSS Unit Reference & Live Calculator
W3C CSS Values and Units Level 4 cheatsheet with interactive px/rem/em/vw converter
Measurement Reference & SI Metric Prefixes
BIPM International System of Units (SI) cheatsheet, metric prefixes (quecto to quetta), and unit converter
Scientific Data Cleaner & Normalizer
Clean, impute missing values, filter outliers, and standardize research datasets 100% client-side
CSV Dataset Structural & Statistical Analyzer
Profile CSV schemas, column data types, missing value percentages, and descriptive summaries
Scientific Data Visualizer & Chart Generator
Generate publication-ready Bar, Line, Area, and Donut SVG charts from research data
Descriptive & Summary Statistics Calculator
Compute 20+ descriptive statistics, central tendency, variance, SEM, skewness, and percentiles
Bivariate Correlation & Covariance Calculator
Calculate Pearson r, Spearman rho, R², sample covariance, and two-tailed p-values
OLS Linear Regression & ANOVA Calculator
Ordinary Least Squares regression, ANOVA table, standard error, residuals, and Y prediction
Scientific Sample Size Calculator (Cochran & FPC)
Compute statistical sample sizes using Cochran’s formula with Finite Population Correction
Confidence Interval Calculator (Means & Proportions)
Calculate exact Z and Student’s t confidence intervals for sample means and proportions
Scientific P-Value & Hypothesis Test Calculator
Calculate exact p-values for Z, t, Chi-Square, and F test statistics with directional tail shading
Probability Distribution Calculator (Continuous & Discrete)
Compute PDF, PMF, CDF, survival probabilities, and expected values across 6 distributions
Scientific Histogram Generator & Frequency Analyzer
Generate frequency histograms with Sturges, Scott, and Freedman-Diaconis binning algorithms
Interactive XY Scatter Plot & Trendline Studio
Generate bivariate scatter plots with OLS regression trendlines, R², and coordinate grids
Tukey Box-and-Whisker Plot Generator
Generate Tukey Box-and-Whisker plots with IQR fences, medians, and outlier points
Normal Distribution Bell Curve Explorer & Calculator
Explore Gaussian bell curves, Z-scores, Empirical Rule (68-95-99.7%), and tail areas
Probability Distribution Simulator & PMF/CDF Lab
Simulate Binomial, Poisson, and Exponential models with interactive PMF/PDF step charts
Mortgage Calculator & Amortization Schedule
Calculate monthly PITI payments, property taxes, PMI, HOA, and amortization schedules
Mortgage Affordability Calculator (DTI Underwriting)
Determine how much house you can afford based on income, debts, and DTI underwriting rules
Loan-to-Value (LTV & CLTV) Calculator
Calculate LTV and Combined CLTV ratios, home equity, and PMI cancellation milestones
Rent vs. Buy Financial Decision Calculator
Compare homeownership vs. renting with stock market reinvestment over a 30-year horizon
Real Estate Investment & Cash Flow Calculator
Analyze rental property cash flow, Net Operating Income (NOI), Cap Rate, Cash-on-Cash, and DSCR
Property ROI & Fix-and-Flip Calculator
Calculate net profits, Total ROI, Annualized ROI, and 70% rule max offer for property flips
Gross & Net Rental Yield Calculator
Calculate Gross and Net rental yields and compare against national market benchmarks
Rent Affordability & Fair Market Rent Calculator
Calculate affordable rent based on the 30% rule, 28% rule, 50/30/20 budget, and landlord 3x rule
Price Per Square Foot & Meter Valuation Calculator
Calculate price per sq ft, price per sq meter, price per acre, and benchmark market valuation
Land Area Calculator & Acreage Converter
Calculate land acreage and convert between Acres, Hectares, Sq Ft, Guntha, Bigha, and Cent
Carpet Area, Built-up & Super Built-up Converter
Convert between Carpet Area, Built-up Area, and Super Built-up Area with custom loading factors
Legal & Court Date Deadline Calculator
Calculate court response deadlines, statutory limitation dates, and procedural filing windows
Notice Period & Termination Date Calculator
Calculate effective contract termination dates, lease eviction windows, and last valid notice dates
Contract Expiration & Milestone Date Calculator
Calculate contract expiration dates, auto-renewal opt-out cutoff deadlines, and milestone schedules
Case & Document Procedural Timeline Calculator
Generate chronological litigation dockets, M&A closing schedules, and export to iCalendar (.ics)
Legal & Corporate Document Checklist Generator
Interactive checklist builder for LLC formation, real estate closings, onboarding, and contract review
Legal Agreement Clause Formatter & Outliner
Format unformatted contract drafts into structured numbered legal hierarchies and detect defined terms
Counterpart Signature Page & Execution Block Generator
Generate multi-party corporate signature blocks, counterpart clauses, and notary acknowledgment lines
Document Reference & Matter Docket Number Generator
Generate systematic reference tracking numbers, docket codes, and contract identifiers with CSV export
Online Stopwatch & Lap Timer
High-precision millisecond stopwatch with lap tracking and split time logging
Countdown Timer & Kitchen Pomodoro
Customizable countdown timer with visual progress bar and synthesized audio alerts
Event Countdown Timer
Live days, hours, minutes, and seconds countdown to any future event or date
Full Screen Digital Clock & Night Display
Clean full-screen digital clock with 12/24-hour modes, date display, and Zen night mode
Online Metronome & Tap Tempo
Musician metronome with 30-280 BPM range, tap tempo detection, and time signatures
Random Name & Choice Picker
Draw random winners, names, contest entries, or choices from any custom list
Polyhedral Dice Roller (D4 - D100)
Roll virtual tabletop RPG dice with custom multipliers, modifiers, and sum calculations
Virtual Coin Flip Simulator
Flip virtual coins with 50/50 probability, multi-coin batches, and streak tracking
Decision Maker & Choice Resolver
Resolve dilemmas, answer yes/no questions, and pick optimal outcomes between choices
File Size & Data Transfer Converter
Convert Bytes, KB, MB, GB, TB with Binary (1024) vs Decimal (1000) and transfer speeds
Screen Resolution & Display Tier Checker
Detect viewport resolution, screen size, Device Pixel Ratio (DPR), and display tier
Browser Information & User-Agent Inspector
Detect browser version, rendering engine, platform, User-Agent string, and WebGL support
Device & Hardware Capabilities Inspector
Inspect CPU logic cores, device memory (RAM), touch support, network tier, and battery
Clipboard Inspector & Text Cleaner
Inspect clipboard text, count characters and bytes, strip HTML tags, and clean whitespace
Instant QR Code Generator
Generate custom QR codes for URLs, text, and Wi-Fi with error correction and PNG download
Secure Password Generator & Entropy Tester
Generate cryptographically strong passwords with entropy scores and crack time estimates
Lorem Ipsum & Random Text Generator
Generate classic Latin placeholder text or random alphanumeric tokens and strings
Color Picker & Palette Harmony Studio
Interactive color picker with HEX/RGB/HSL conversion, WCAG contrast, and harmony palettes
Unicode Character Map & Symbol Picker
Search and copy special characters, math symbols, currency signs, arrows, and Greek letters
Lo Shu Grid Calculator & Feng Shui Matrix
Calculate sacred 3x3 birth grid, active Thought/Will/Action planes, and missing number remedies
Numerology & Life Path Calculator
Calculate Life Path, Expression/Destiny, Soul Urge, and Personality numbers with Chaldean & Pythagorean systems
Vedic Janam Kundli & Birth Chart Generator
Generate accurate Vedic D1 Lagna and D9 Navamsha birth charts with planetary degrees and Nakshatras
Free Premium Kundli Generator with PDF Download (English & Hinglish)
World's #1 Free Premium Kundli with instant English & Hinglish switch, D1/D9 charts, Career, Love & Marriage, Health & Digestion, Shani Sade Sati, Lal Kitab, and 14-Page A4 PDF download
Kundli Matching & 36 Guna Milan Calculator
Ashtakoot marriage horoscope compatibility with Nadi, Bhakoot, and Manglik Dosha analysis
Today's Vedic Panchang & Choghadiya Muhurat
Calculate daily Tithi, Nakshatra, Yoga, Karana, Rahu Kaal, and real-time Choghadiya timings
Interactive Tarot Card Reader (78-Card Deck)
Draw 1-Card Oracle, 3-Card Past/Present/Future, and Celtic Cross spreads with deep interpretations
120-Year Vimshottari Mahadasha Timeline & Sub-Period Calculator
Calculate your 120-year planetary progression tree from Moon Nakshatra with Antardashas and visual timeline
Shani Sade Sati & Dhaiya Phase Tracker with Vedic Remedies
Track Saturn 7.5-year Sade Sati (Rising, Peak, Setting) and Dhaiya transits with authentic remedies
Manglik Dosha & Kaal Sarp Yog Analyzer with 16 Cancellations
Scan Mars house placements with 16 classical Vedic cancellations and 12 Kaal Sarp Yog types
Interactive Palmistry Hand Line Reader & Chiromancy Analyzer
Interactive SVG hand reader: Heart, Head, Life, and Fate lines with planetary mount interpretations
Chinese BaZi Four Pillars of Destiny & 5 Elements Calculator
Calculate Year, Month, Day, and Hour Pillars with Day Master essence and 5-element distribution
Lucky Name Numerology & Spelling Harmonizer (Chaldean Method)
Harmonize your full name spelling to align with Driver and Conductor numbers for wealth and success
Client-Side Video Watermark Studio (Text & Logo Overlay)
Add custom text, brand signatures, and transparent logo images to videos locally in-browser
Video Area Blur & Face Pixelator Studio
Censor sensitive regions, blur faces, and pixelate license plates in video clips client-side
Daily Moon Phase & Void-of-Course Calendar
Real-time astronomical lunar illumination, synodic moon age, Void-of-Course windows, and timing guide
Western Big Three (Sun, Moon & Rising) Astrology Calculator
Calculate your Sun, Moon, and Ascendant signs with 4-element balance and psychological synthesis
AI Watermark Remover & Delogo Inpainter (Gemini, DALL-E, TikTok)
Erase Google Gemini sparkles, DALL-E color strips, and camera timestamps client-side
Signature Extractor & Transparent PNG Maker
Extract handwritten pen signatures from paper photos and export clean transparent PNGs
YouTube 4K & Full HD Thumbnail Grabber
Extract and download original 4K, 1080p MaxRes, and HD video thumbnails instantly
Social URL De-Tracker & Clean Link Maker
Strip tracking tokens (?igsh, ?si, fbclid, utm) from Instagram, YouTube, and TikTok links
Pitra Dosh Calculator & Vedic Remedies
Calculate ancestral karmic debts (Pitra Rin), Grahan Yog, and authentic Vedic remedies
Janam Nakshatra & Pada Calculator (27 Lunar Mansions)
Find your Vedic birth star, quarter (pada), ruling deity, gana, yoni, and lucky baby naming letters
Vedic Lucky Gemstone (Ratna) Recommendation Calculator
Discover your Life Stone (Jeevan Ratna), Lucky Stone (Karak), and Fortune Stone (Bhagya Ratna)
Sacred Rudraksha Mukhi & Planetary Recommender
Find the ideal 1 to 14 Mukhi Rudraksha for your birth chart, health, wealth, and spiritual growth
Lal Kitab Kundli & Miracle Totke Analyzer
Uncover your Kismat Ka Sitara, sleeping planets (Soya Grah), and practical everyday remedies
Ascendant & Rising Sign Calculator (Exact Degrees & Lagnesh)
Calculate your exact Vedic Ascendant degree, Lagna lord placement, physical appearance, and first impression aura
Vedic Moon Sign (Chandra Rashi) Blueprint
Discover your true Vedic Moon Sign, subconscious mind, emotional temperament, and lunar vitality
Sun Sign Calculator (Vedic Sidereal vs Western Tropical)
Compare your Vedic Surya Rashi (Sidereal) and Western Sun Sign (Tropical) with ~24° Ayanamsha shift
Kaal Sarp Yog & 12 Serpent Yogas Explorer
Identify Anant, Kulik, Vasuki and 12 types of Kaal Sarp Yog with Udit/Anudit status and age milestones
Navamsha (D9) Chart & Spouse Destiny Calculator
Analyze your D9 harmonic chart, Vargottama planets, marriage longevity, and partner's traits
Zodiac Love & Synastry Compatibility Matrix (12×12)
Calculate romance, communication, intimacy, and long-term marriage synergy between any two signs
YouTube Channel Logo & 4K Banner Downloader
Download high-definition channel avatars and 4K ultra-wide banners by handle or link
Social Video & Reel Audio Extractor
Extract clean MP3/WAV audio tracks from Instagram Reels, TikToks, Shorts, and MP4 videos
Universal Audio Format Converter
Convert audio between MP3, WAV, AAC, OGG, and FLAC client-side with zero cloud uploads
MP4 to MP3 Converter
Extract clean MP3 audio track from any MP4 video without server upload
MP4 Video Converter
Convert MOV, WebM, MKV, and AVI videos into universally compatible MP4 format
MOV to MP4 Converter
Convert Apple iPhone MOV video recordings to universal MP4 format
MP3 to OGG Converter
Convert MP3 audio tracks to open-source OGG Vorbis audio client-side
WebP to PNG Converter
Convert WebP images to transparent, uncompressed PNG format instantly
JFIF to PNG Converter
Convert Windows JFIF picture downloads to universal PNG files
PNG to SVG Vector Converter
Convert raster PNG images into scalable vector SVG graphics
HEIC to PNG Converter
Convert Apple iPhone HEIC/HEIF photos to transparent PNG images
WebP to JPG Converter
Convert WebP images to high-resolution JPEG photos
Universal PDF Converter Suite
Convert PDF to Word, Excel, JPG, and convert documents to PDF locally
Universal Document Converter
Convert between Word, PDF, Excel, Text, Markdown, and OpenXML client-side
Ebook Format Converter
Convert between EPUB, MOBI, and PDF ebook publications client-side
PDF to EPUB Converter
Convert PDF documents into reflowable EPUB e-reader format
EPUB to PDF Converter
Convert EPUB ebooks into printable, structured PDF books
HEIC to PDF Converter
Combine Apple iPhone HEIC photos into single multi-page PDF document
DOCX to PDF Converter
Convert Microsoft Word (.docx) documents to standard PDF files client-side
MP4 to GIF Converter
Convert MP4 video clips into animated, looping GIF images client-side
WebM to GIF Converter
Convert WebM screen captures and browser recordings to GIF client-side
APNG to GIF Converter
Convert animated PNG (APNG) files to universally supported GIF images
GIF to MP4 Converter
Convert heavy animated GIFs into lightweight looping MP4 videos
GIF to APNG Converter
Convert 256-color GIFs into 24-bit high-color animated PNGs
Image to Animated GIF Maker
Combine multiple JPG, PNG, and WebP images into an animated GIF slideshow
MOV to GIF Converter
Convert Apple QuickTime MOV video clips into animated GIFs
AVI to GIF Converter
Convert AVI video files into animated GIFs client-side
Archive Converter & Extractor
Convert and extract between ZIP, 7Z, TAR, and GZ archives client-side
MP3 Audio Compressor
Compress MP3 audio files to smaller size with customizable bitrate and channels
WAV Audio Compressor
Compress large WAV files into compact 16-bit or reduced sample rate audio
JPEG Image Compressor
Compress JPEG / JPG photos to target file size (50KB, 100KB, 200KB)
PNG Image Compressor
Lossless PNG compression preserving transparency and sharp vector lines
Animated GIF Compressor
Compress animated GIFs to under 8MB or 25MB for Discord and Slack
MP4 Video Compressor
Compress MP4 video file size for Discord, email, and web sharing client-side
Crop Video
Crop video dimensions to 16:9, 9:16 vertical, 1:1 square, or custom area
Trim Video
Cut and trim video start and end points with millisecond precision
GIF Maker
Create animated GIFs from multiple photos, images, or video clips
Resize Image
Resize image dimensions by width, height, or percentage scaling
Crop Image
Crop photos with aspect ratio presets or custom rectangular selection
Rotate Image
Rotate images 90°, 180°, 270°, or arbitrary angles clockwise and counterclockwise
Flip Image
Flip images horizontally or vertically to create mirror reflections
Image Enlarger
Enlarge and upscale images 2x, 4x with bicubic edge smoothing
PDF Merge
Merge and combine multiple PDF files into one organized document
PDF Split
Split multi-page PDFs into separate individual pages or page ranges
Flatten PDF
Flatten interactive PDF forms, layers, and digital signatures into read-only pages
Resize PDF
Resize and rescale PDF pages to standard paper formats (A4, Letter, Legal)
Unlock PDF
Unlock password-protected PDF documents and remove restrictions in 1-click in-browser
Rotate PDF
Rotate individual pages or entire PDF documents 90°, 180°, or 270°
Protect PDF
Encrypt any PDF with strong password security and permission controls in-browser
Crop PDF
Trim PDF margins, remove white borders, and crop pages interactively
Organize PDF
Reorder, rotate, delete, and rearrange PDF pages with visual drag-and-drop
Extract image from PDF
Extract all embedded pictures, photos, and diagrams from PDF documents
Extract Pages from PDF
Extract specific pages or page ranges from PDF into a new document
ODT to PDF Converter
Convert OpenOffice and LibreOffice Writer ODT documents to PDF online for free
ODS to PDF Converter
Convert OpenOffice and LibreOffice Calc spreadsheets to PDF tables
ODP to PDF Converter
Convert OpenOffice and LibreOffice Impress presentation slides to PDF
RTF to PDF Converter
Convert Rich Text Format (.rtf) documents to PDF online for free
Pages to PDF Converter
Convert Apple iWork Pages (.pages) documents to PDF on Windows, Mac, and Mobile
HWP to PDF Converter
Convert Korean Hangul Word Processor (.hwp, .hwpx) files to PDF
ZIP to PDF Converter
Unpack images and documents from ZIP archives into a single PDF
Share PDF Privately
Share PDF files peer-to-device without uploading to third-party cloud servers
Request Signatures
Prepare agreements and request PDF signatures with visual fields and audit trails
AI Question Generator from PDF
Generate multiple-choice questions, quizzes, and flashcards from study PDFs
JSON to XML Converter
Convert JSON objects and arrays into structured XML documents online
XML to JSON Converter
Convert XML files and nodes into structured JSON objects online
CSV to XML Converter
Convert CSV spreadsheets into structured XML records online
XML to CSV Converter
Convert XML documents and feeds to flat CSV spreadsheets
Excel to XML Converter
Convert Excel workbooks (.xlsx, .xls) to structured XML files
XML to Excel Converter
Convert XML files into Microsoft Excel spreadsheets (.xlsx)
Split CSV File
Split large CSV files into smaller chunks with preserved headers
Split Excel Workbook
Split multi-sheet Excel files into individual .xlsx spreadsheets
Outlook MSG & EML to PDF Converter
Convert Microsoft Outlook .msg and email .eml files to clean, formatted PDF documents
Audio & Speech to Text Converter
Transcribe audio recordings, voice dictation, and speech into text 100% in-browser
YouTube Transcript Cleaner & Formatter
Clean YouTube closed captions and transcript text into readable paragraphs and articles
Video Subtitles Editor (SRT & VTT)
Create, timecode, and export synchronized video subtitle tracks in SRT and WebVTT formats
Podcast Transcriber & Summarizer
Transcribe podcast audio episodes and generate structured summaries and key takeaways
AI Essay Writer & Academic Drafter
Structure academic essays with thesis statements, body arguments, counterpoints, and citations
AI Article Writer & Editorial Drafter
Craft engaging journalistic feature articles and editorial essays with subheadings
AI Article Generator
Rapidly generate complete, publication-ready articles with bullet takeaways
AI Paragraph Writer
Compose coherent, persuasive single paragraphs with smooth topic sentences and transitions
AI Paragraph Completer & Idea Finisher
Continue unfinished paragraphs or ideas with natural stylistic continuity
AI Story Generator & Creative Fiction Studio
Generate immersive creative fiction stories with rich atmospheres and character arcs
AI Humanizer & Natural Tone Restorer
Transform robotic AI text into natural human writing with higher perplexity and burstiness
AI Content Detector & Scanner
Scan text for robotic AI patterns, low perplexity, and repetitive sentence structures
YouTube Script Writer & Video Outliner
Structure engaging video scripts with attention hooks, visual B-roll cues, and CTAs
LinkedIn Post Generator
Format high-engagement professional LinkedIn updates with strong hooks and whitespace
AI Cold Email Writer & Outreach Drafter
Write personalized, high-conversion B2B cold outreach emails with compelling CTAs
Real Estate Listing Description Generator
Generate luxury, inviting property listing descriptions highlighting architectural features
Business Slogan & Tagline Generator
Generate memorable brand taglines and company slogans categorized by persona
Landing Page Copywriter
Write complete landing page conversion funnels including Hero headline, subhead, and features
AI FAQ Generator & Customer Q&A Creator
Create high-converting customer FAQ questions with authoritative, transparent answers
Bill of Sale Generator & Property Transfer Drafter
Draft legally structured bills of sale for vehicle, equipment, or personal property transfers
Asset Purchase Agreement Generator
Draft binding formal commercial purchase agreements with payment schedules and warranties
Privacy Policy Generator (GDPR & CCPA Compliant)
Generate GDPR and CCPA compliant website privacy policies covering client-side data handling
Explain It (ELI5 & Technical Explainer)
Explain complex scientific, technical, or philosophical concepts at any comprehension level
Trivia & Quiz Question Generator
Generate challenging trivia questions with multiple-choice options, answers, and explanations
Social Media Poll Question Generator
Create engaging interactive polls for LinkedIn, Twitter, Slack, and community forums
AI Blog Post Generator
Generate high-ranking, engaging blog posts with optimized H2 headings and key takeaways
Blog Post Topic & Headline Generator
Brainstorm compelling, high-converting article topics, headline angles, and editorial hooks
Startup Business Plan Generator
Draft comprehensive startup business plans with executive summaries and monetization
SEO Blog Outline Generator
Structure comprehensive, SEO-optimized article outlines with H2/H3 subheadings and talking points
Multi-Platform Social Post Writer
Draft snappy, viral-ready social media posts optimized for X (Twitter), Facebook, and LinkedIn
Strategic 4-Week Content Planner
Create strategic 4-week editorial content calendars with publication cadences and topic clusters
Editorial Content Brief Generator
Draft comprehensive editorial briefs for freelance writers with word counts, keywords, and guidelines
Corporate Press Release Generator
Draft official corporate press releases formatted for PR Newswire, Business Wire, and media outlets
Podcast Episode Script Writer
Structure engaging audio podcast episodes with opening teasers, guest cues, and segment breaks
Add Border to Image
Add custom borders, photo frames, polaroid borders, and rounded edges to photos
Chart Maker & Graph Generator
Create presentation-ready Bar, Line, Pie, and Donut charts instantly online
NDA Generator (Non-Disclosure Agreement)
Draft binding Mutual and Unilateral Non-Disclosure Agreements for partnerships and IP protection
Sentence Rewriter & Paraphraser
Rewrite sentences in multiple styles: Professional, Concise, Punchy, Casual, and Academic
HEIC to AVIF Converter
Convert Apple iPhone HEIC photos directly to next-generation AVIF images
NEF to JPG Converter (Nikon RAW)
Convert Nikon camera RAW (.NEF) photos to universal high-quality JPEG
NEF to AVIF Converter (Nikon RAW)
Convert Nikon camera RAW (.NEF) files to modern high-efficiency AVIF
Rearrange PDF Pages
Reorder, sort, and organize PDF pages visually with instant preview
Extract Text from PDF
Extract all text, paragraphs, and tables from PDF documents instantly
Pixelate Image & Censor Blur
Pixelate faces, private details, and sensitive areas in photos
Make Round Image (Circle Cropper)
Crop photos into perfect circles with transparent background for avatars and profile pictures
Find & Replace Text in PDF
Search and replace names, dates, amounts, and text across PDF documents
Chat with PDF & Document Q&A Assistant
Ask questions, summarize contents, and extract key takeaways from PDF documents interactively
Redact PDF (Blackout Sensitive Data)
Permanently blackout sensitive text, social security numbers, and private data in PDFs
Erase PDF & Whiteout Tool
Erase text, unwanted elements, and graphics from PDF pages using whiteout
PDF Annotator & Markup Tool
Add notes, comments, highlights, stamps, and shapes to PDF documents
Highlight PDF Text Online
Highlight key sentences, study notes, and research passages in PDF files
Add Text to PDF (Type on PDF)
Type text, fill form fields, and insert paragraphs anywhere on a PDF
Add Image to PDF (Insert Picture & Logo)
Insert logos, photo stamps, signatures, and graphics directly into PDF pages
Add Pages to PDF
Insert blank pages or append additional documents to an existing PDF
Extract Pages from PDF
Extract specific pages or page ranges from a PDF into a new standalone document
Create Fillable PDF Forms
Build interactive PDF forms with text fields, checkboxes, and radio buttons
Create PDF Template
Design reusable invoice, letterhead, certificate, and agreement PDF templates
AI PDF Summarizer
Generate concise executive summaries and bullet-point takeaways from long PDFs
AI Smart Search in PDF
Search text, regex patterns, numbers, and key concepts across multi-page PDFs
Universal Web Font Converter
Convert TTF, OTF, WOFF, and WOFF2 fonts with live typography tester and @font-face CSS generator
TTF to WOFF Converter
Convert TrueType (TTF) fonts to compressed WOFF web fonts with live preview
TTF to WOFF2 Converter
Convert TTF fonts to modern ultra-compressed WOFF2 for maximum website speed
OTF to TTF Converter
Convert OpenType (OTF) fonts to TrueType (TTF) format for universal OS compatibility
WOFF to TTF Converter
Convert WOFF web fonts back to installable desktop TTF fonts
WOFF2 to TTF Converter
Convert WOFF2 web fonts to installable TTF TrueType fonts in seconds
FLAC to MP3 Converter
Convert lossless FLAC audio files to high-bitrate MP3s directly in your browser
OPUS to MP3 Converter
Convert WhatsApp and Telegram OPUS voice notes to universal MP3 audio
7Z to ZIP Converter
Convert 7Z (7-Zip) archives to standard ZIP files directly in your browser
TAR to ZIP Converter
Convert Linux TAR and TAR.GZ archives into standard ZIP files online
MOBI to EPUB Converter
Convert Amazon Kindle MOBI eBooks to universal EPUB format for Apple Books and Kobo
EPUB to MOBI Converter
Convert EPUB eBooks to MOBI format for older Amazon Kindle e-readers
MOBI to PDF Converter
Convert Kindle MOBI eBooks to printable, shareable PDF documents
DXF to SVG Converter
Convert 2D CAD DXF drawings to scalable vector graphics (SVG) in your browser
SVG to EPS Converter
Convert SVG vector graphics to Encapsulated PostScript (EPS) for print publishing
EPS to SVG Converter
Convert EPS print files to lightweight web-friendly SVG vectors
RAR to ZIP Converter
Convert WinRAR RAR archives to universal ZIP files directly in your browser
JPG to JPEG Converter
Convert JPG images to standard JPEG format with compliant MIME headers
JPEG to JPG Converter
Convert JPEG images to standard 3-letter .jpg extension instantly
JPG to TXT Converter (OCR)
Extract editable text from JPG images, photos, receipts, and book pages using AI OCR
PDF to XML Converter
Convert PDF documents into structured XML hierarchy with page tags and text nodes
MP4 to MPEG Converter
Convert MP4 videos to standard MPEG/MPG format directly in your browser
PNG to ICO Converter (Favicon Maker)
Convert transparent PNG images to Windows .ico favicon and icon format in your browser
JPG to ICO Converter
Convert JPG photos and logos into standard Windows .ico icon files
JFIF to JPG Converter
Fix the annoying Windows Chrome JFIF download issue — convert directly to standard JPG
OGG to MP3 Converter
Convert OGG Vorbis audio tracks and Discord voice clips to universal MP3 format
MOV to MP3 Converter
Extract high-fidelity MP3 audio from iPhone and QuickTime MOV video recordings
MKV to MP4 Converter
Convert Matroska MKV movies to universally compatible MP4 video format
PNG Repair & Corrupt Image Recovery
Repair corrupt, truncated, or unreadable PNG images client-side with zero cloud uploads
JPG / JPEG Repair & Photo Recovery
Restore corrupted, half-grey, or truncated JPG and JPEG photos client-side
MP3 Audio Repair & Stream Fixer
Repair unplayable, truncated, or header-corrupted MP3 audio files directly in your browser
ZIP Archive Repair & Damaged File Recovery
Salvage files and folders from corrupted or damaged ZIP archives in your browser
Wavefront OBJ 3D Model Repair & Sanitizer
Repair invalid vertex indices, triangulate n-gons, and clean corrupted OBJ 3D models
STL to OBJ 3D Model Converter
Convert 3D printing STL mesh files to standard Wavefront OBJ 3D models in browser
OBJ to STL 3D Printing Converter
Convert Wavefront OBJ 3D models to binary STL files ready for 3D printing slicers
AVIF to PNG Converter
Convert modern AVIF images to lossless PNG with transparent alpha preservation
AVIF to JPG / JPEG Converter
Convert AVIF photos to universally compatible high-resolution JPG format
Add Text to Image (Photo Caption & Typography)
Write custom text, captions, and watermarks on photos with live styling
MP4 to WAV Converter (Lossless Audio Extraction)
Extract uncompressed 16-bit / 24-bit studio WAV audio from MP4 video files
M4A to WAV Converter
Convert M4A audio files to uncompressed studio WAV format in browser
AAC to MP3 Converter
Convert Advanced Audio Coding (AAC) files to universally compatible MP3 format
AAC to WAV Converter
Convert AAC audio streams into uncompressed broadcast-quality WAV files
Myanmar Salary & Income Tax Calculator
Calculate Myanmar net salary, IRD progressive income tax, and SSB contributions (ပြည်တွင်းအခွန်)
Côte d'Ivoire Salary & Tax Calculator
Calculateur de salaire net ivoirien: CNPS, ITS, Contribution Nationale et IGR (Zone UEMOA)
Cambodia Salary & Tax Calculator (GDT & NSSF)
Calculate Cambodia net salary, GDT Tax on Salary (ToS), and NSSF pension/healthcare
Calculadora de Sueldo Líquido Bolivia (Gestora & RC-IVA)
Calcula el sueldo líquido en Bolivia: Gestora Pública (12.71%), RC-IVA y Formulario 110
Lebanon Salary & Income Tax Calculator
Calculate Lebanese net take-home pay, Ministry of Finance income tax, and NSSF (حاسبة الراتب لبنان)
Netherlands 30% Ruling Calculator (Belastingdienst)
Calculate Dutch expat 30% ruling tax savings, Box 1 taxable income, and net take-home pay
VLSM Subnet Architect & CIDR Visualizer
Variable Length Subnet Masking (VLSM) hierarchical divider, IP ranges & Cisco IOS exports
AI Prompt Token Counter & LLM Cost Studio
Estimate prompt tokens, context utilization & API pricing across Claude, GPT-4o, Gemini & DeepSeek
Audio BPM Tap Tempo & Time Sync Studio
Millisecond-accurate tap tempo, audio delay time synchronization table & metronome
Bill of Materials (BOM) & Hardware Cost Studio
Component cost breakdown, SMT pick & place assembly, NRE tooling amortization & MSRP calculator
Paraguay Salary & Tax Calculator (IPS & IRP)
Calculate Paraguayan net salary with IPS obrero (9%), employer (16.5%), and IRP progressive tax
Venezuela Dual-Currency Salary Calculator (USD & VES)
Calculate Venezuelan take-home pay with IVSS, FAOV, RPE, and index-linked Cestaticket in VES and USD
Honduras Salary & Tax Calculator (IHSS, RAP & SAR)
Calculate Honduran net salary in Lempiras (HNL) with IHSS, RAP (1.5%), and SAR progressive income tax
El Salvador Salary Calculator (ISSS, AFP & Renta)
Calculate Salvadoran net salary in USD with ISSS (3% / $30 max), AFP (7.25%), and Ministerio de Hacienda tax
Lithuania Salary & Tax Calculator (Atlyginimo Skaičiuoklė)
Calculate Lithuanian net wage (į rankas) with GPM (20%), PSD (6.98%), Sodra VSD (12.52%), and NPD formula
Georgia Country Salary & 1% Small Business Tax Calculator
Calculate Georgian net income in GEL with 20% flat tax, 2% pension, and the 1% Individual Entrepreneur nomad regime
Cameroon Salary & IRPP Tax Calculator (Bulletin de Paie)
Calculate Cameroonian net salary in FCFA (XAF) with CNPS (4.2%), IRPP brackets (10%-35%), and 10% CAC surtax
Senegal Salary & Tax Calculator (IPRES, CSS & IR)
Calculate Senegalese net salary in FCFA (XOF) with IPRES (5.6%), CSS, TRIMF, and family quotient income tax
Angola Salary & IRT Tax Calculator (Salário Líquido)
Calculate Angolan net salary in Kwanzas (AOA) with AGT IRT progressive brackets (0%-25%) and INSS (3%)
Iraq Salary & Income Tax Calculator (حاسبة الراتب في العراق)
Calculate Iraqi net wage in IQD with General Commission for Taxes (GCT 3%-15%) and Social Security (5%)
Password Entropy & Brute-Force Crack Time Studio
Calculate Shannon password entropy in bits and realistic brute-force crack time against CPU, GPU, and supercomputers
Harmonic Color Palette & WCAG 2.2 Contrast Studio
Generate aesthetic UI palettes and instantly audit WCAG 2.2 AAA/AA and APCA contrast ratios with CSS export
Chinese Simplified ⇄ Traditional Character Converter (简繁体转换器)
Instant bidirectional conversion between Simplified (简体) and Traditional (繁體/正體) Chinese in browser memory
China Mortgage & Housing Provident Fund Calculator (房贷与公积金计算器)
Calculate Chinese commercial, Housing Provident Fund (公积金), and combination loans with LPR rates
Korean Jasoseo Character & Byte Counter (자기소개서 글자수 세기)
Real-time character and byte counter for Korean job portals (Saramin, JobKorea, Incruit)
Korean Pyung to Square Meter Converter (평수 계산기 - 평 ⇄ ㎡)
Convert between Korean Pyung (평) and Square Meters (㎡) for apartments with price-per-pyung calculation
Japanese Tsubo, Jou & Tatami Unit Converter (坪・平米・畳 換算器)
Convert between Japanese Tsubo (坪), Square Meters (㎡), and Tatami mats (畳) with regional standards
Russia & CIS NDS VAT 20% & 10% Calculator (Калькулятор НДС)
Calculate Russian VAT (НДС 20% & 10%): Extract VAT (выделить) and Add VAT (начислить) with words in Russian
Hijri & Gregorian Calendar Converter (محول التاريخ الهجري والميلادي)
Convert dates between Umm al-Qura Islamic Hijri calendar and Gregorian with moon-sighting offset
India New vs Old Tax Regime Calculator (Section 115BAC)
Compare New Tax Regime (Section 115BAC with ₹75k Standard Deduction) vs Old Regime with 80C, 80D & HRA
Reaction Time Test (Reflex Speed Benchmark)
Test your visual reflex speed in milliseconds with human percentile ranking
CPS Test (Clicks Per Second Speed Tester)
Measure your mouse clicking speed in Clicks Per Second across 1s, 5s, 10s, and 60s tests
Online Graphing Calculator (2D Function Plotter)
Plot equations, examine coordinates, and visualize mathematical functions in real-time
Basic Calculator
Standard arithmetic calculations with memory store, decimal precision, and history tape
Average Calculator
Calculate arithmetic mean, median, mode, range, and geometric mean from numbers
Fraction Calculator
Add, subtract, multiply, and divide fractions with common denominator steps and reduction
Fraction Simplifier
Reduce fractions to simplest irreducible form and convert improper to mixed numbers
Percentage Calculator
Calculate percentages, percentage change, markups, and discounts with steps
Ratio Calculator
Solve missing proportion terms (A:B = C:D), simplify ratios, and scale dimensions
Algebra Calculator
Evaluate polynomials, expand binomial products using FOIL, and compute power-rule derivatives
Equation Solver
Solve single-variable equations and 2x2 simultaneous linear systems via Cramer’s Rule
Linear Equation Solver
Solve linear equations ax + b = c with isolated steps and variable solutions
Quadratic Equation Solver
Calculate real and complex roots, discriminant, and parabola vertex for ax² + bx + c = 0
Factoring Calculator
Find all integer factors, factor pairs, and canonical prime factor trees with exponents
Exponent Calculator
Calculate powers, negative exponents, fractional powers, and scientific notation
Logarithm Calculator
Calculate natural logarithm ln(x), common log₁₀(x), binary log₂(x), and arbitrary base log_b(x)
Geometry Calculator
Calculate 2D areas, perimeters, 3D volumes, and surface areas across geometric shapes
Triangle Calculator
Calculate triangle area via Heron’s formula, interior angles via Law of Cosines, and perimeter
Circle Calculator
Calculate circle radius, diameter, circumference, surface area, arc length, and sector area
Area Calculator
Calculate 2D surface area for rectangles, squares, triangles, circles, trapezoids, and ellipses
Volume Calculator
Calculate 3D volume and total surface area for cubes, prisms, cylinders, spheres, and cones
Pythagorean Calculator
Solve right triangles using a² + b² = c² with exact simplified radicals and decimal values
Trigonometry Calculator
Calculate sin, cos, tan, csc, sec, cot, and inverse functions in degrees or radians
Sine Calculator
Evaluate sin(θ) for any angle with exact unit circle coordinates and radian conversions
Cosine Calculator
Evaluate cos(θ) for any angle with exact unit circle coordinates and conversions
Tangent Calculator
Evaluate tan(θ) = sin(θ)/cos(θ) with angle slopes and asymptote detection
Degree / Radian Converter
Convert angles bidirectionally between Degrees (°) and Radians (rad) with exact π multiples
Derivative Calculator
Compute polynomial and trigonometric derivatives with power rule and chain rule steps
Integral Calculator
Calculate definite and indefinite integrals with antiderivatives and area under the curve
Limit Calculator
Evaluate mathematical limits lim(x→c) with direct substitution, L’Hôpital’s rule, and one-sided limits
Statistics Calculator
Calculate sample and population variance, standard deviation, mean, and interquartile range
Mean Calculator
Calculate arithmetic mean, sum of observations, and dataset sample count with steps
Median Calculator
Find the exact middle median value of any sorted dataset, resistant to extreme outliers
Standard Deviation Calculator
Calculate sample std dev (s) and population std dev (σ) with step-by-step variance
Variance Calculator
Calculate sample variance s² and population variance σ² from squared deviations
Probability Calculator
Calculate event probabilities, permutations (nPr), combinations (nCr), and odds
Permutation Calculator (nPr)
Calculate permutations nPr where order matters using exact factorial formulas
Combination Calculator (nCr)
Calculate combinations nCr = n! / [r!(n-r)!] where order is irrelevant
Matrix Calculator
Add, multiply, invert, and transpose 2x2 and 3x3 matrices with step-by-step linear algebra
Determinant Calculator
Calculate determinants det(A) for 2x2 and 3x3 matrices using expansion by minors
Vector Calculator
Calculate 3D vector addition, dot product, cross product, magnitude, and angles
GCD Calculator (GCF / HCF)
Find Greatest Common Divisor using step-by-step Euclidean division algorithm
LCM Calculator
Calculate Least Common Multiple using the fundamental formula lcm(a, b) = |a·b| / gcd(a, b)
Prime Number Checker
Check primality up to 100 trillion, find divisors, and view prime factor trees
Prime Factorization Calculator
Decompose any positive integer into canonical prime factors with powers and tree steps
Fibonacci Calculator
Generate Fibonacci numbers Fn = Fn-1 + Fn-2 and compute golden ratio approximations
Sequence & Series Calculator
Calculate arithmetic and geometric sequence n-th terms, partial sums, and series formulas
Coordinate Geometry Calculator
Calculate 2D distance, midpoint, slope m, and line equations between points (x1, y1) and (x2, y2)
Graphing Calculator
Interactive HTML5 Canvas function plotter with Cartesian coordinate grid, zoom, and presets
Number to Words Converter
Convert numbers into formal written English words and check-writing currency formats
Roman Numeral Converter
Convert numbers bidirectionally between standard Arabic numbers (1–3999) and Roman numerals
Binary Converter
Convert base-2 binary strings into decimal, hexadecimal, octal, and ASCII text
Decimal Converter
Convert base-10 decimal numbers into binary, hexadecimal, octal, and BCD
Hex Converter
Translate hexadecimal strings into decimal, binary, octal, and ASCII text
Octal Converter
Convert base-8 octal numbers to decimal, binary, hex, and Unix chmod file permissions
Velocity Calculator (v = d / t)
Calculate velocity, speed, displacement, and time elapsed with multi-unit conversions
Acceleration Calculator (a = Δv / t)
Calculate constant linear acceleration, change in velocity, and g-force equivalents
Distance Kinematics Calculator
Calculate displacement d = v_i·t + ½·a·t² under constant acceleration
Projectile Motion Calculator
Simulate 2D trajectory parabolic paths, maximum height, flight time, and horizontal range
Force Calculator (F = ma)
Calculate net force in Newtons and pounds-force using Newton’s Second Law
Newton’s Second Law Calculator
Calculate net force, friction resistance f_k = μ·N, and net acceleration
Pressure Calculator (P = F / A)
Calculate mechanical pressure in Pascals, bar, PSI, and atmospheres
Density Calculator (ρ = m / V)
Calculate material mass density in kg/m³, g/cm³, and lb/ft³ with material presets
Momentum & Impulse Calculator
Calculate linear momentum p = mv, impulse J = F·Δt, and 1D collision outcomes
Kinetic Energy Calculator (KE = ½mv²)
Calculate translational kinetic energy in Joules, kJ, and kilocalories
Potential Energy Calculator (PE = mgh)
Calculate gravitational potential energy in Joules and kilojoules
Work Calculator (W = F·d·cos θ)
Calculate mechanical work done in Joules accounting for angle of applied force
Power Calculator (P = W / t)
Calculate power rate of energy transfer in Watts, Kilowatts, and Horsepower
Gravity Calculator (Newton’s Law)
Calculate universal gravitational attraction F = G·m₁m₂/r² and planetary surface gravity
Heat Energy Calculator (Q = mcΔT)
Calculate thermal energy transfer Q = m·c·ΔT in Joules, kJ, and kilocalories
Temperature Converter (°C, °F, K, °R)
Convert temperatures across Celsius, Fahrenheit, Kelvin, and Rankine scales
Ohm’s Law Calculator (V = IR)
Calculate Voltage, Current, Resistance, and Power wheel with 4-way solving
Voltage Calculator
Calculate electric potential difference V = I·R and V = P / I in Volts
Current Calculator
Calculate electric current I = V / R and I = P / V in Amperes
Resistance Calculator
Calculate electrical resistance R = V / I and series/parallel resistor networks
Electrical Power Calculator (P = VI)
Calculate electric power in Watts, Kilowatts, and BTU/h using Joule’s Law
Coulomb’s Law Calculator
Calculate electrostatic attraction and repulsion force F = k_e·|q₁q₂|/r²
Wave Speed Calculator (v = f·λ)
Calculate wave speed, frequency, and wavelength across sound, light, and water waves
Frequency Calculator (f = 1 / T)
Calculate oscillation frequency in Hertz, kHz, and MHz from wave period or speed
Wavelength Calculator (λ = v / f)
Calculate spatial wavelength in meters and nanometers from frequency and wave speed
Wave Period Calculator (T = 1 / f)
Calculate wave oscillation period in seconds and milliseconds from frequency
Thin Lens Equation Calculator
Calculate focal length, image distance, and magnification for converging and diverging lenses
Spherical Mirror Calculator
Calculate image distance and magnification for concave and convex mirrors
Physics Formula Calculator & Constants
Calculate Einstein’s E = mc², Planck’s E = hf, pendulum periods, and De Broglie wavelengths
Molar Mass Calculator
Calculate molar mass, molecular weight, and percent composition of chemical formulas
Molecular Weight Calculator
Compute molecular weight in g/mol and Daltons (Da) with atomic mass breakdowns
Mole Calculator (Grams ⇄ Moles ⇄ Particles)
Convert between mass in grams, chemical moles, and number of molecules using Avogadro’s constant
Molarity Calculator (M = mol / L)
Calculate molar concentration, solute moles, and solution volume in Liters
Molality Calculator (m = mol / kg)
Calculate temperature-independent molal concentration in moles per kilogram of solvent
Solution Concentration Calculator (g/L, ppm, %)
Calculate mass concentrations in g/L, mg/mL, parts-per-million (ppm), and weight/volume %
Dilution Calculator (C₁V₁ = C₂V₂)
Calculate stock volume and solvent addition for solution dilutions C₁·V₁ = C₂·V₂
Stoichiometry Calculator
Calculate reaction mole ratios, product yields, and limiting reactant amounts
pH Calculator (pH = -log[H⁺])
Calculate solution pH, pOH, and hydronium [H⁺] ion concentration with interactive acidity scale
pOH Calculator (pOH = -log[OH⁻])
Calculate hydroxide ion concentration [OH⁻], pOH, and corresponding pH
Acid-Base Titration Calculator
Calculate equivalence point volume in volumetric acid-base neutralization titrations
Percent Composition Calculator
Calculate percentage by mass of every element in a chemical compound
Empirical Formula Calculator
Derive simplest whole-number atomic ratio from mass percentages or elemental grams
Molecular Formula Calculator
Calculate actual molecular formula from empirical formula and experimental molar mass
Ideal Gas Law Calculator (PV = nRT)
Calculate Pressure, Volume, Moles, or Temperature with universal gas constant R
Boyle’s Law Calculator (P₁V₁ = P₂V₂)
Calculate isothermal gas pressure-volume relationship at constant temperature
Charles’s Law Calculator (V₁/T₁ = V₂/T₂)
Calculate isobaric gas thermal expansion and contraction at constant pressure
Combined Gas Law Calculator
Calculate gas transitions when Pressure, Volume, and Temperature change simultaneously
Radioactive Half-Life Calculator
Calculate exponential radioactive decay, remaining isotope mass, and elapsed half-lives
Electron Configuration Tool
Generate Aufbau orbital electron configurations and noble gas shorthand for elements 1 to 118
Oxidation Number Calculator
Determine oxidation states of transition metals and elements in chemical compounds and polyatomic ions
Chemical Equation Balancer
Balance chemical reactions and verify atomic conservation of mass automatically
Punnett Square Generator (Monohybrid & Dihybrid)
Generate 2×2 and 4×4 Punnett squares with genotypic and phenotypic inheritance ratios
Genetics Probability Calculator
Calculate multi-locus independent assortment probabilities using Mendelian product and sum rules
DNA Complement Calculator
Generate 5' to 3' Watson-Crick complementary DNA strands with base count statistics
DNA Reverse Complement Calculator
Generate 5' to 3' reverse complement sequences essential for PCR primer design and Sanger sequencing
DNA to RNA Transcription Converter
Transcribe DNA sequences to mRNA (T ⟶ U) or reverse-transcribe RNA to cDNA
Genetic Codon Translator (DNA/RNA ⟶ Protein)
Translate nucleotide sequences into 20 amino acid polypeptide chains using the universal genetic code
Hardy-Weinberg Equilibrium Calculator
Calculate allele frequencies (p, q) and genotype frequencies (p², 2pq, q²) in population genetics
Population Growth Calculator (Exponential & Logistic)
Simulate exponential unconstrained growth and logistic carrying capacity S-curve populations
Clinical BMI Calculator (WHO Standards)
Calculate Body Mass Index and healthy weight ranges according to WHO clinical criteria
Basal Metabolic Rate & TDEE Calculator
Calculate daily resting calories (BMR) and total daily energy expenditure (TDEE) using Mifflin-St Jeor
Biological Age Calculator
Estimate biological vs chronological age based on physiological biomarkers and lifestyle metrics
Microscope Magnification Calculator
Calculate total optical magnification M_total = M_ocular × M_objective for light microscopy
Field of View & Cell Sizing Calculator
Estimate individual cellular diameter in micrometers (μm) from field of view (FOV)
Mean Calculator (Arithmetic, Weighted & Trimmed)
Calculate sample mean, population mean, and central tendency measures of numerical datasets
Median Calculator
Find the middle value and robust 50th percentile of sorted datasets
Mode Calculator
Identify most frequent values, unimodal, bimodal, and multimodal distribution peaks
Range Calculator
Calculate total statistical dispersion and difference between maximum and minimum values
Variance Calculator (Sample & Population)
Calculate sample variance s² (with Bessel’s correction n-1) and population variance σ²
Standard Deviation Calculator (s & σ)
Compute sample standard deviation s and population standard deviation σ with deviation steps
Z-Score Calculator (Standard Normal Score)
Standardize values into Z-scores and find exact percentile positions on the normal distribution
Percentile Calculator
Calculate k-th percentiles and percentile rankings using empirical cumulative distribution functions
Quartile Calculator (Q₁, Q₂, Q₃)
Calculate First Quartile (Q₁), Median (Q₂), and Third Quartile (Q₃) for 5-number summaries
IQR Calculator (Interquartile Range & Outliers)
Calculate Interquartile Range (Q₃ - Q₁) and detect outliers using Tukey’s 1.5×IQR fences
Pearson Correlation Coefficient Calculator (r)
Calculate Pearson product-moment correlation coefficient r and determine relationship strength
Covariance Calculator (Sample & Population)
Calculate joint variability Cov(X, Y) between two random variables
Regression Calculator
Perform linear regression analysis with slope, intercept, and predictive evaluations
Linear Regression Calculator (ŷ = mx + b)
Calculate slope m, y-intercept b, line equation, and predict future y values
R-Squared Calculator (Coefficient of Determination)
Calculate R² to quantify the percentage of variance explained by the regression model
Probability Calculator (AND / OR Rules)
Calculate joint probability P(A ∩ B), union P(A ∪ B), and conditional probabilities
Normal Distribution Calculator (Gaussian Bell Curve)
Calculate cumulative normal distribution CDF P(X ≤ x) and standard normal probabilities
Binomial Distribution Calculator (B(n, p))
Calculate exact and cumulative binomial probabilities for n independent Bernoulli trials
Poisson Distribution Calculator
Model rare discrete events occurring independently at constant average rate λ
P-Value Calculator (Hypothesis Significance)
Calculate two-tailed and one-tailed p-values from Z, T, and Chi-Square test statistics
Student’s T-Test Calculator (One-Sample & Two-Sample)
Perform one-sample and two-sample Student's t-tests for small sample hypothesis testing
Z-Test Calculator
Perform hypothesis Z-tests for large sample sizes with known population standard deviation
Chi-Square Test Calculator (χ² Goodness of Fit)
Perform Pearson’s Chi-Square test of independence and goodness-of-fit for categorical distributions
One-Way ANOVA Calculator (F-Test)
Perform Analysis of Variance (ANOVA) to compare means across three or more treatment groups
Confidence Interval Calculator
Calculate 90%, 95%, and 99% confidence intervals for population means with margin of error
Margin of Error Calculator
Calculate sampling margin of error for surveys and opinion polls
Sample Size Calculator (Cochran’s Formula)
Determine minimum required sample size for research surveys and clinical studies
Binary Converter (Base 2 ⇄ Dec, Hex, Oct)
Convert binary sequences into decimal, hexadecimal, and octal with bit-weight expansions
Decimal Converter (Base 10 ⇄ Binary, Hex, Oct)
Convert decimal integers to binary, hexadecimal, and octal using repeated division
Hexadecimal Converter (Base 16 ⇄ Bin, Dec, Oct)
Convert hexadecimal strings (0-9, A-F) to binary, decimal, and octal formats
Octal Converter (Base 8 ⇄ Bin, Dec, Hex)
Convert octal numbers (0-7) to binary, decimal, and hexadecimal with 3-bit triplets
Arbitrary Base N Converter (Base 2 to 36)
Convert numbers between any arbitrary radices from Base 2 up to Base 36
Binary Calculator (Add, Subtract, Multiply, Divide)
Perform arithmetic on binary numbers with two's complement signed representations
Boolean Algebra Calculator & Laws
Simplify boolean expressions and explore De Morgan’s laws, absorption, and identity theorems
Truth Table Generator
Generate complete truth tables for AND, OR, XOR, NAND, NOR, and XNOR boolean functions
Interactive Logic Gate Simulator
Simulate digital logic gates (AND, OR, NOT, NAND, NOR, XOR, XNOR) with interactive toggle pins
Bitwise Calculator (AND, OR, XOR, Shifts)
Perform bitwise operations (&, |, ^, ~, <<, >>) with interactive 8-bit binary visualizations
Text to ASCII Converter (Dec, Hex, Binary)
Convert text characters into ASCII decimal, hexadecimal, and binary byte sequences
Searchable ASCII Table (0 to 127)
Complete 0–127 ASCII reference chart with Decimal, Hex, Octal, Binary, and Control Codes
Unicode Converter (Code Points & UTF-8 Bytes)
Convert characters and emojis to Unicode code points (U+XXXX), UTF-8 bytes, and HTML entities
Big-O Complexity Calculator & Scaling Visualizer
Calculate and project operation counts for O(1), O(log n), O(n), O(n log n), O(n²), and O(2ⁿ)
Algorithm & Data Structure Complexity Reference
Interactive complexity matrix for sorting algorithms, search methods, and core data structures
IPv4 Subnet Calculator (CIDR & Masks)
Calculate network address, broadcast address, netmask, and usable host ranges from CIDR
Data Storage Converter (KB, MB, GB vs KiB, MiB, GiB)
Convert between decimal metric storage (10³) and binary operating system units (2¹⁰)
Ohm’s Law & DC Power Calculator
Calculate Voltage (V), Current (I), Resistance (R), and Power (P) across DC circuits
Resistor Calculator (Series, Parallel & Color Codes)
Calculate Series and Parallel equivalent resistance with 4-band color code interpretations
Capacitor Calculator (Energy & RC Time Constant)
Calculate stored charge Q = C·V, electrostatic energy E = ½CV², and RC time constant τ
Inductor Calculator (Energy & RL Time Constant)
Calculate stored magnetic energy E = ½LI² and RL transient time constant τ = L / R
Power Factor & AC Power Triangle Calculator
Calculate Real Power (kW), Reactive Power (kVAR), Apparent Power (kVA), and PF correction
Electrical Load & Ampacity Calculator (1Φ & 3Φ)
Calculate full load operating current and circuit breaker sizes for Single-Phase and Three-Phase systems
Gear Ratio & Speed Reducer Calculator
Calculate gear ratio, output RPM reduction, and multiplied output torque with mechanical efficiency
Torque & Rotational Horsepower Calculator
Calculate mechanical torque τ = F·r and rotational power in Watts and Imperial Horsepower (HP)
Stress & Factor of Safety Calculator
Calculate normal tensile/compressive stress σ = F/A and design safety factors (SF)
Strain & Hooke’s Law Calculator
Calculate engineering strain ε = ΔL/L₀ and elastic stress from Young’s Modulus (E)
Euler-Bernoulli Beam Deflection Calculator
Calculate maximum beam deflection δ_max and bending moment M_max under point and uniform loads
Pipe Flow & Volumetric Discharge Calculator
Calculate volumetric discharge Q = A·v, velocity, and Darcy-Weisbach friction head loss
Reynolds Number & Flow Regime Calculator
Calculate dimensionless Reynolds number Re and classify Laminar, Transitional, or Turbulent flow
Engineering Unit Converter (Pressure, Force, Power)
Convert between SI and US Customary units for Pressure, Stress, Force, Torque, and Power
College & High School GPA Calculator
Calculate semester Grade Point Average on standard 4.0, weighted, and unweighted scales
Cumulative CGPA Calculator
Calculate cumulative overall CGPA across multiple college semesters
Semester GPA Calculator (SGPA)
Calculate term SGPA with dynamic course entries and credit weighting
Degree Credits & Graduation Progress Calculator
Track completed credit hours, graduation requirements, and degree completion percentage
GPA ↔ Percentage Converter (US, India & UK)
Convert between US 4.0 GPA, India 10.0 CGPA (9.5× rule), and academic percentages
Course Grade Calculator
Calculate overall course percentage and letter grades across all syllabus categories
Final Grade Calculator
Determine the exact final exam score needed to get your desired class grade
Required Exam Score Calculator
Calculate target test marks needed to pass or achieve high honors
Weighted Grade Calculator
Calculate weighted average grades with customized syllabus percentage weights
Course Grade & Syllabus Simulator
Simulate potential course outcomes based on anticipated assignment scores
Marks Percentage Calculator (Board & School Exams)
Calculate overall percentage and division across multiple school and board exam subjects
Student Percentage Math Calculator
Quick percentage math solver for test marks, score increases, and ratios
College Attendance Percentage Calculator
Calculate current attendance percentage = (Attended / Total) × 100%
Required Attendance & Bunk / Skip Calculator
Calculate how many classes you MUST attend to hit 75%/85%, or how many you can safely bunk
Study Time & Credit Hours Recommendation Calculator
Calculate weekly study hours based on the Carnegie credit-hour rule and course difficulty
Exam Countdown & Revision Timer
Live days countdown to final exams, midterms, and SAT/ACT test dates
Assignment & Project Timeline Calculator
Break term papers and assignments into manageable daily work milestones
Study Session Stopwatch & Focus Timer
Track dedicated study hours, focus intervals, and session time milestones
Pomodoro Focus Timer (25m / 5m / 15m)
Classic 25-minute Pomodoro focus cycles with automated short and long breaks
Exam Date Countdown & Revision Window
Live days, weeks, and hours countdown to midterms and final examinations
Active Recall Flashcard Generator
Interactive 3D flip flashcards for active recall testing with custom and pre-loaded STEM decks
Interactive Quiz Generator
Interactive practice quiz maker with instant scoring, feedback, and active recall testing
Speed Mental Math Quiz Generator
Speed mental arithmetic drills (Addition, Subtraction, Multiplication) with difficulty tiers
Random Question & Oral Exam Prompt Generator
Randomized conceptual prompts for viva examinations, mock interviews, and self-testing
Printable Practice Worksheet Generator
Generate clean, printable STEM and math practice worksheets with custom problem counts
Worksheet Answer Key & Solution Generator
Instant step-by-step solutions and answer keys corresponding to generated practice sheets
Random Practice Problem Generator
Infinite randomized practice problems across Algebra, Arithmetic, and Physics
Multiplication Table & Grid Generator (Up to 20×20)
Interactive and printable multiplication grid tables from 1×1 up to 20×20 or single table views
Weekly Study Schedule & Timetable Generator
Generate balanced weekly study timetables distributing subjects across morning, afternoon, and evening
Daily Study Planner & Task Checklist
Track daily study priorities, focus hour quotas, and syllabus completion tasks
Spaced Repetition Revision Planner (1-3-7-21 Days)
Ebbinghaus forgetting curve revision schedule at 1, 3, 7, and 21-day spaced intervals
Printable STEM Formula Sheet & Cheat-Sheet Builder
Compile and print customized formula cheat-sheets for Math, Physics, Chemistry, and Engineering
2D Cartesian Graphing Calculator
Interactive 2D Cartesian graphing calculator with zoom, pan, multiple functions, and value tables
Function Curve Visualizer
Plot single and dual function curves to visualize intersections, roots, and behavior
Algebraic Equation Grapher
Graph linear, quadratic, and polynomial equations on the Cartesian plane
2D Inequality Region Shader
Shade 2D inequality solution regions (y ≥ f(x), y ≤ f(x), y > f(x), y < f(x))
Universal 2D Vector Graph Generator
Generate clean, publication-ready 2D Cartesian function and relation graphs
Interactive Coordinate Plane & Distance/Midpoint Explorer
Plot coordinate points (x, y), calculate Euclidean distance, midpoint, slope, and line equations
Interactive Number Line Inequality Visualizer
Graph open and closed rays and interval inequalities (x > a, x ≤ b, a ≤ x < b) on the real number line
Statistical Data Graph Generator
Transform raw numerical datasets into clean distributions, scatter plots, and histograms
Scatter Plot & Linear Regression Generator
Plot bivariate (x, y) points with automatic least-squares regression line (y = mx + b) and Pearson r
Continuous Frequency Distribution Histogram Generator
Group continuous datasets into custom bins and render frequency distribution histograms
Interactive Pie & Donut Chart Generator
Create interactive SVG pie and donut charts with custom categories, percentages, and legends
Comparative Bar Chart Generator
Create comparative horizontal and vertical bar charts with custom labels and values
Time-Series & Trend Line Chart Generator
Create continuous trend line charts for time-series and sequential data tracking
Compound Interest & Wealth Growth Calculator
Calculate compound interest growth A = P(1 + r/n)^(nt) with recurring monthly contributions
Simple Interest Calculator (I = P·r·t)
Calculate non-compounding interest on fixed loans, treasury bills, and promissory notes
Time Value of Money (TVM) Solver
Solve for Present Value (PV) or Future Value (FV) given discount rate and time periods
Annuity Present & Future Value Calculator
Value Ordinary Annuities and Annuities Due across recurring payment series
Return on Investment (ROI) & Annualized Rate Calculator
Calculate net profit, total percentage ROI, and annualized rate of return per year
Compound Annual Growth Rate (CAGR) Calculator
Calculate the smooth annual growth rate across multi-year business and investment periods
Inflation & Purchasing Power Erosion Calculator
Calculate future price of goods and the decline of purchasing power over time
Break-Even Analysis & Margin of Safety Calculator
Calculate unit sales and revenue needed to cover fixed and variable business costs
Profit Margin & Markup Calculator
Calculate gross profit margin percentage, net profit, and markup on cost
Price Elasticity of Demand (PED) Calculator
Calculate arc midpoint price elasticity of demand and classify Elastic, Inelastic, or Unitary
Opportunity Cost & Trade-off Analyzer
Quantify the economic value and return of the next best forgone alternative
Loan EMI & Amortization Schedule Calculator
Calculate fixed monthly EMI payments, total interest cost, and annual balance paydown
Scientific Length, Distance & Astronomical Units Converter
Subatomic to astronomical metric, imperial, and cosmological distance conversions with scientific notation
Scientific Mass, Weight & Atomic Units Converter
Micrograms, Daltons/amu, carats, slugs, kilograms, pounds, and metric tons with exact molar mass linkage
Velocity, Speed & Mach Number Converter
Kinematic velocities, aerodynamic Mach numbers at standard sea level, knots, and relativistic fractions of c
Acceleration & Gravitational G-Force Converter
Kinematic accelerations, planetary g-forces, Gal seismology units, and aerospace load factors
Scientific Area & Geodetic Surface Converter
Nuclear cross-section barns, circular mils, square meters, hectares, acres, and square kilometers
Scientific Force & Gravitational Load Converter
Newtons, dynes, pound-force (lbf), kilogram-force (kgf), kips, and poundals with Newton's second law derivations
Torque & Moment of Force Engineering Converter
Newton-meters, foot-pounds, inch-pounds, dyne-centimeters, and kilogram-force meters for mechanical powertrains
Scientific Volume & Fluid Capacity Converter
Microliters, cubic meters, liters, US/UK gallons, oil barrels, and laboratory glassware volumetric units
Volumetric Flow Rate & Discharge Converter
Cubic meters per second, L/min, CFM (cubic feet per minute), US/UK GPM, and petroleum barrels per day
Pressure, Stress & Vacuum Engineering Converter
Pascals, bar, psi, MPa, atmospheres, Torr/mmHg, inches of mercury, and deep-vacuum millitorr
Scientific Density & Specific Gravity Converter
kg/m³, g/cm³, lb/ft³, lb/gal, water relative specific gravity, and petroleum API gravity with temperature compensation
Dynamic & Kinematic Viscosity Converter
Pascal-seconds, Poise, Centipoise (cP), Stokes, Centistokes (cSt), and Saybolt Universal Seconds (SSU)
Thermodynamic Temperature Scale Converter
Celsius, Fahrenheit, Kelvin, Rankine, Delisle, Newton, and Réaumur with absolute zero calibration
Scientific Energy, Work & Heat Converter
Joules, calories, kilocalories, BTU, therms, electron-volts (eV), kilowatt-hours (kWh), and foot-pounds
Scientific Power & Heat Flow Rate Converter
Watts, kilowatts, metric horsepower (PS/CV), mechanical horsepower (HP), BTU/hr, and tons of refrigeration (TR)
Thermal Conductivity & Heat Transfer Coefficient Converter
W/(m·K), cal/(s·cm·°C), BTU/(hr·ft·°F), and building insulation U-values & R-values
Electric Charge, Current & Potential Converter
Coulombs, Ampere-hours, elementary charges (e), Amperes, Volts, and electrostatic statcoulombs/statvolts
Magnetic Field & Flux Density Converter
Tesla (T), Gauss (G), Weber (Wb), Maxwell (Mx), gamma (γ), Oersted (Oe), and Ampere-turns per meter
Frequency, Wavelength & Photon Energy Converter
Hertz (Hz to THz), electromagnetic wavelength (meters, nm, Å), photon energy (eV, J), and wavenumber (cm⁻¹)
Radiation Activity & Absorbed Dose Converter
Becquerel (Bq), Curie (Ci), Gray (Gy), Rad, Sievert (Sv), Rem, and ionizing exposure Roentgen (R)
Advanced Scientific Calculator
Multi-function algebraic, trigonometric, logarithmic, and combinatorics scientific workstation
Significant Figures Calculator & Counter
Count sig figs, classify digit types, and perform addition, subtraction, multiplication & division rounding rules
Scientific Notation & E-Notation Calculator
Perform arithmetic on scientific (a × 10^b) and engineering E-notation numbers with SI metric prefixes
Measurement Uncertainty & Error Propagation Calculator
Calculate propagated absolute and relative uncertainties for experimental measurements
Percent Error & Percent Difference Analyzer
Calculate experimental percent error and duplicate trial percent difference with graphical tolerance bands
CODATA Fundamental Physical Constants Explorer
Searchable NIST CODATA 2022 physical constants database with uncertainty bounds and 1-click clipboard copy
Interactive Periodic Table of Elements
Dynamic 118-element periodic grid with IUPAC blocks, electron configurations, and element inspector
Isotope Abundance & Relative Atomic Mass Calculator
Calculate weighted average atomic mass from natural isotope percentages with mass defect estimates
Radiocarbon Dating & Archaeological Age Calculator
Calculate archaeological Carbon-14 age, remaining %pMC, and calendar historical era alignment
Beer-Lambert Law & Spectrophotometry Calculator
Calculate absorbance, transmittance, molar absorptivity, and concentration with interactive calibration curve
Henderson-Hasselbalch Buffer Solution Calculator
Calculate buffer pH, conjugate acid/base molar ratio, and buffer capacity (β) against added strong acid/base
Serial Dilution & Plating Factor Calculator
Calculate multi-tube sequential logarithmic dilutions, cumulative factors, and CFU/mL microbial plating density
Standard Solution Reagent Preparation & Purity Calculator
Calculate exact reagent mass to weigh on analytical balances with chemical assay purity and hydrate corrections
Arrhenius Equation & Reaction Kinetics Calculator
Calculate activation energy (Ea), rate constants, and temperature dependence with interactive Arrhenius plot
Nernst Equation & Electrochemical Cell Potential Calculator
Calculate non-standard cell potential (Ecell), reaction quotient (Q), Gibbs free energy (ΔG), and cell spontaneity
Universal Printable Math Worksheet Maker
Create custom printable math worksheets with student headers, problem counts, and matching answer keys
Speed Arithmetic Facts & Timed Math Drill Generator
Generate timed sprint arithmetic fact sheets (20 to 100 problems) for addition, subtraction, multiplication & division
Fractions & Mixed Numbers Practice Worksheet Maker
Generate fraction addition, subtraction, multiplication, division, and mixed numbers practice sheets
Multiplication Times Tables & Mystery Grid Maker
Create printable multiplication tables, mystery missing-number grids (10×10 to 20×20), and single-table drills
Real-World Elementary Math Word Problem Generator
Generate real-world word problems covering money, change, time, distance, and sharing with scratchpad boxes
Algebraic Equations & Factoring Worksheet Generator
Generate linear equations, variables on both sides, systems of equations, and quadratic factoring worksheets
Geometric Shapes, Area, Volume & Angles Worksheet Maker
Generate perimeter, area, surface area, volume, and angle geometry worksheets with dynamic SVG figures
Cartesian Coordinate Plane Grid Worksheet Maker
Create printable coordinate grid worksheets (1, 2, 4, or 6 grids per page) with plotting drills and line graphing
Ratios, Proportions & Percentages Worksheet Maker
Generate worksheets for ratios, proportions, unit rates, discounts, sales tax, and percent change
PEMDAS / BODMAS Order of Operations Drill Maker
Generate PEMDAS/BODMAS worksheets with parentheses, brackets, exponents, and stepped evaluation trees
Trigonometric Functions & Right Triangle Worksheet Maker
Generate right triangle SOH-CAH-TOA, unit circle exact values, and Law of Sines/Cosines worksheets
Calculus Derivatives & Integrals Practice Worksheet Generator
Generate polynomial limits, power/product/chain rule derivatives, and basic integral worksheets
Sig Figs & Scientific Notation Practice Worksheet Maker
Generate sig fig counting, arithmetic rounding, scientific notation, and metric conversion worksheets
Chemical Equations & Stoichiometry Worksheet Maker
Generate chemical equation balancing, molar mass, and stoichiometry mole ratio drill sheets
Physics Kinematics & Forces Practice Worksheet Maker
Generate kinematics, Newton's laws (F=ma), work/energy, and Ohm's law physics problem worksheets
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Browse structured productivity, calculation, and document utilities across 53 specialized suites.
Image & Photo Tools
Compress, resize, convert, crop, rotate, and inspect images locally in browser with zero cloud upload.
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CSV viewers, Markdown previewers, text-to-PDF, text mergers, splitters, and document formatting utilities.
Text & Writing Tools
Word counters, character counters, readability checkers, case converters, line sorters, text cleaners, diff tools, extractors, and markdown utilities 100% in-browser.
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JSON formatters, Base64, URL encode/decode, JWT inspectors, hashes, CSS generators, and developer utilities.
Security & Privacy Tools
Free client-side password generators, strength analyzers, cryptographic hashes (SHA-256, SHA-512, MD5), AES encryption, file checksums, and metadata strippers with zero server uploads.
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Free online URL utilities, IP subnet calculators, DNS/WHOIS lookups, HTTP header analyzers, user agent parsers, QR codes, and barcodes.
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Generators & Random Tools
Cryptographically secure random number & string generators, passwords, usernames, rosters, decision wheels, polyhedral dice, UUIDs, gradients, and QR/barcodes.
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Free online social media image resizers, YouTube thumbnail & banner creators, video aspect ratio helpers, caption formatters, hashtag generators, and SRT/VTT subtitle tools.
Emoji & Symbols
Instant click-to-copy emoji library, special unicode symbols, kaomoji, math, and currency signs.
Files & Archives
Compress, split, merge, hash, inspect metadata, sanitize, and archive files (ZIP, TAR, GZIP) with 100% in-browser privacy.
Media & Entertainment Tools
Free browser-based media utilities for subtitle conversion (SRT, VTT), time shifting, subtitle merging, video and audio bitrate calculation, frame rate conversion, media duration, aspect ratios, and media file metadata analysis.
Math & Education Tools
Free online math calculators for algebra, equations, fractions, geometry, trigonometry, and number systems.
SEO & Webmaster Tools
Free online SEO utilities, meta tag generators, JSON-LD schema builders, SERP simulators, keyword density analyzers, sitemaps, and .htaccess tools.
Design & Color Tools
Free online color pickers, HEX/RGB/HSL/CMYK converters, WCAG 2.1 contrast checkers, color blindness simulators, palette generators, and CSS/SVG studios 100% in-browser.
Data & Spreadsheet Tools
Free online CSV viewers, editors, converters to JSON/Excel, data cleaners, deduplicators, column tools, JSON/XML tree viewers, and interactive SVG chart makers.
Finance & Business Tools
Free financial calculators, business planning tools, tax estimators, invoice generators, and currency converters. 100% private and client-side.
Date, Time & Calendar Tools
Free online age calculators, date difference counters, business workday schedulers, world clocks, live timers, perpetual calendars, and Unix timestamps 100% in-browser.
OCR & Text Extraction
Extract text, tables, URLs, emails, and phone numbers from images, PDFs, screenshots, and scanned documents 100% in-browser.
AI Utilities & Natural Language Tools
100% client-side AI text summarizers, rewriters, paraphrasers, grammar checkers, sentiment analyzers, speech synthesis, and document QA with zero server transmission.
Science & Research Tools
100% client-side physics, chemistry, astronomy, radiation, molecular weight, pH, half-life, and scientific calculators with zero server data transfer.
Home, Construction & Property Tools
Free professional calculators for home renovation, building materials, room dimensions, land area, and property finance 100% in-browser.
Automotive & Vehicle Tools
Free professional automotive calculators for fuel economy, trip costs, engine power, gear ratios, tire sizing, EV charging, and car financing 100% in-browser.
Travel & Trip Planning Tools
Free smart tools for vacation budgeting, flight times, packing checklists, jet lag recovery, multi-currency conversions, and travel itineraries 100% in-browser.
Geography & Geodesy Tools
Free online tools for GPS coordinate conversion, great circle distances, compass bearings, elevation physics, time zones, and country geographic utilities.
Health & Fitness Tools
Free informational calculators for BMI, body fat percentage, BMR, TDEE, calories, macros, hydration, running pace, cycling speed, heart rate zones, and 1RM strength.
Food & Cooking Tools
Free culinary calculators for recipe scaling, serving adjustments, cups to grams ingredient conversions, kitchen timers, oven temperatures, nutrition, and recipe costing.
Shopping & Everyday Life Tools
Free smart shopping calculators for discounts, sale prices, restaurant tipping, bill splitting, unit pricing, price per weight, sales tax, shopping lists, and quick decisions.
Photography Tools
Free smart photography calculators for depth of field, hyperfocal distance, 35mm focal length equivalents, shutter speeds, exposure value, print sizes, DPI/PPI, and camera EXIF inspection.
Gaming Tools
Free smart gaming calculators for mouse sensitivity conversion, eDPI benchmarks, custom resolutions, aspect ratios, field of view (FOV), FPS frame times, PC bottlenecks, XP progression, and RPG combat stats.
Productivity & Focus Tools
Free browser-based productivity utilities for Pomodoro focus timers, habit tracking, task checklists, Eisenhower priority matrices, time blocking, timesheet hours, and international team meeting scheduling.
Business & Office Tools
Free client-side business utilities for generating invoices, receipts, quotations, purchase orders, formal letters, email signatures, meeting agendas, minutes, and tracking expenses.
E-commerce & Online Retail Tools
Free smart e-commerce calculators for net profit, profit margins, marketplace referral fees, dimensional shipping weight, landed product costs, SKU matrices, and barcode tools.
QR, Barcode & Identifiers
Free client-side utilities for generating customizable QR codes, scanning barcodes via webcam, EAN/UPC retail codes, ISBN book tools, and UUID/GUID generators.
Career & Job Search Tools
Free client-side career tools for salary and hourly wage conversion, overtime pay, take-home tax estimates, work hours timesheet tracking, notice period and experience calculation, ATS resume audits, and professional emails.
Agriculture & Environmental Tools
Free client-side agricultural and environmental calculators for land area conversion, irrigation flow, crop water requirements (ETc), seed rate, fertilizer NPK dosing, harvest yield, solar energy, carbon footprint, and farm energy audits.
Astronomy & Space Tools
100% client-side astrophysics, orbital mechanics, telescope optics, cosmic distance converters, Kepler laws, escape velocity, and relativistic travel calculators with zero server data transfer.
Engineering & Technical Tools
100% client-side electrical, mechanical, structural, civil, and chemical engineering calculators: Ohm's law, beam deflection, pipe flow, gear trains, wire sizing, and thermal transfer.
Language & Linguistics Tools
100% client-side language and linguistics tools: word counter, syllable analysis, reading & speaking time, case conversion, phonetic transcription, transliteration, Morse code, Braille, Unicode symbols, and Text-to-Speech.
Accessibility Tools
Audit and optimize digital accessibility with WCAG 2.1/2.2 AA & AAA contrast checkers, color blindness simulators, typography calculators, alt text generators, and ARIA validators.
Email Tools
Compose, format, validate, and preview emails with RFC 5322 validators, bulk scrapers, HTML signature designers, and header analyzers.
Printing & Paper Tools
Calculate DPI/PPI print resolution, convert ISO 216 paper sizes (A, B, C series), generate passport and ID photo printable sheets, and compute bleed, margins, and PDF imposition layouts 100% in-browser.
URL & Link Tools
Encode, decode, parse, sanitize, and construct high-performance web, marketing, and mobile links. Includes RFC 3986 percent encoders, GA4 UTM campaign builders, deep link generators, and click-to-call link makers.
Reference & Lookup Tools
Comprehensive technical references, standard lookups, and developer cheatsheets: MIME types, HTTP status codes & methods, HTML entities, Unicode, emojis, ISO country/currency/language codes, time zones, CSS units, and measurement conversions.
Research & Data Analysis Tools
Publication-grade statistical analysis, hypothesis testing, regression models, probability distributions, data cleaning, and interactive SVG scientific charts — 100% private in-browser client-side computation.
Real Estate & Property Investment Tools
Calculate mortgage PITI payments, amortization schedules, rent vs buy feasibility, DTI mortgage affordability, fix-and-flip ROI, rental yields, cap rates, price per sq ft, and land acreage conversions 100% in-browser.
Legal & Administrative Utilities
Calculate procedural court deadlines, notice periods, contract expiration dates, case timelines, document checklists, agreement clause formatting, and signature counterpart pages 100% in-browser.
Vedic Astrology & Cosmic Tools
Free client-side Vedic astrology, Lo Shu 3x3 Grid, Chaldean & Pythagorean numerology, and planetary calculators with 100% in-browser privacy.