Math Calculators

Calculate percentages, percentage change, and percentage of a number.

Add, subtract, multiply, and divide fractions with step-by-step solutions.

Calculate the area of common shapes including rectangles, circles, and triangles.

Calculate the circumference and area of a circle from radius or diameter.

Calculate the result of raising a number to any power.

Calculate the missing side of a right triangle using a² + b² = c².

Solve ax² + bx + c = 0 and find real or complex roots.

Calculate mean, standard deviation, and variance from a set of numbers.

Find the greatest common divisor and least common multiple of two numbers.

Calculate the required sample size for surveys and experiments.

Calculate aspect ratio, resize dimensions, and convert between formats.

Add, subtract, multiply matrices and calculate determinants and transposes.

Calculate logarithms with any base including natural log and log base 10.

Calculate probability, odds, and complementary probability from events and outcomes.

Calculate permutations P(n,r) and combinations C(n,r) with formulas.

Calculate mean, median, mode, range, and standard deviation from a data set.

Convert numbers between binary, octal, decimal, and hexadecimal.

Count significant figures and round numbers to a specified number of sig figs.

Convert between standard form and scientific notation.

Check if a number is prime, find its factors, and see nearest primes.

Generate cryptographically secure random numbers with custom range and count.

Convert between Arabic numbers and Roman numerals bidirectionally.