📐

Math Calculators

Free math calculators for percentages, fractions, statistics, and geometry.

5 calculators — all free, no sign-up

Percentage Calculator

Calculate percentages, percentage change, and what percent one number is of another.

Fraction Calculator

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

Random Number Generator

Generate random numbers within any range, with or without duplicates.

Triangle Calculator

Solve any triangle — find missing sides and angles using the law of sines and cosines.

Standard Deviation Calculator

Calculate mean, variance, and standard deviation for any data set.

← Back to All Calculators