Pythagorean Theorem Calculator

Calculate the hypotenuse or a missing side of a right triangle using the Pythagorean theorem.

Enter Your Values

a² + b² = c²

Solve For

Side a

Side b

Hypotenuse c

Results

Fill in your values above and click Calculate.

Frequently Asked Questions

Q.What is the Pythagorean theorem?

In a right triangle, the square of the hypotenuse equals the sum of squares of the other two sides: a² + b² = c². Named after ancient Greek mathematician Pythagoras.

Q.What are Pythagorean triples?

Sets of three integers satisfying a²+b²=c². Common examples: (3,4,5), (5,12,13), (8,15,17), (7,24,25). Multiply any triple by a constant to get another.