Math Calculators

Solve common percentage problems including percent of, percentage change, and what percent one number is of another.

Use a fast browser-based calculator for arithmetic, powers, roots, trigonometry, and logarithms.

Add, subtract, multiply, or divide fractions and mixed numbers with simplified results.

Generate random integers or decimal numbers inside a chosen range.

Calculate triangle perimeter, area, and angles from three sides or two right-triangle legs.

Calculate mean, variance, sample standard deviation, and population standard deviation from a list of numbers.