Math &amp; Education Tools

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

Prime Number Checker & Prime Factorizer

Determine if any number is prime or composite, compute prime factor trees, and list all divisors

Interactive Matrix Math Calculator

Perform matrix addition, subtraction, multiplication, determinants, transposes, and matrix inverses

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 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

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

Online Graphing Calculator (2D Function Plotter)

Plot equations, examine coordinates, and visualize mathematical functions in real-time