Unit & Currency Converters Tools
Universal unit converter, real-time currency rates, arbitrary number base conversion, Roman numerals, time, and data storage converters 100% in-browser. All tools run 100% in your browser with zero server uploads and instant processing.
Roman Numeral Converter (Two-Way)
Convert between Arabic numbers (1–3999) and Roman numerals with syntax validation
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
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
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.
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
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