Math Calculators

Everyday math — percentages, random numbers, and more.

Fraction Calculator

Add, subtract, multiply, or divide fractions and get the simplified result instantly.

Random Number Generator

Generate random numbers within any range — great for games, giveaways, and coding.

Standard Deviation Calculator

Calculate the standard deviation, variance, and mean of any set of numbers.

Percentage Calculator

Calculate percentages, find what percent one number is of another, and more.

Math for real life

You use math more than you think — tips, discounts, tax, grades, stats. Our percentage calculator handles the most common scenario: finding what percent one number is of another.

It is useful for students checking scores, shoppers calculating sale prices, and anyone analyzing data at work. Instead of pulling out your phone calculator and doing mental math, just type the numbers in and get your answer instantly.