Math

Math calculators

Percentage, fractions, algebra, geometry, statistics, and scientific evaluation.

14 calculators·Updated daily·All formulas visible

π

Most searchedThe most-Googled calculation on the web.

Percentage Calculator

What is X% of Y, Y is what percent of X, and percent change between two values — three modes for the percentage questions people mix up.

Common pairings

Homework helpers

QuadraticTriangleStatistics

PercentageFractionGCD / LCM

Showing all 14 math calculators

Basic

3 calculators

What is X% of Y, Y is what percent of X, and percent change between …

Add, subtract, multiply, or divide two fractions — the result is red…

Greatest common divisor and least common multiple of two integers — …

Advanced

3 calculators

Evaluate a full expression with trig, logs, powers, roots, and facto…

Mean, median, mode, range, and standard deviation from any list of n…

Compute x^y, logarithms in any base, and nth roots in one place — lo…

Algebra

1 calculators

Solve ax² + bx + c = 0 with the quadratic formula — real or complex …

Geometry

3 calculators

Right triangle solver: enter two legs to get the hypotenuse from the…

Area of a rectangle, circle, or triangle from the standard formulas …

Volume of a box, sphere, or cylinder from the standard formulas — re…

Education

2 calculators

Grade point average on the unweighted 4.0 scale from letter grades a…

What you need to score on the final exam to hit your target grade — …

Statistics

2 calculators

P-value from a z-score, one- or two-tailed, with a significance verd…

Confidence interval

Confidence interval for a mean from sample statistics — a z-interval…