Pythagorean Theorem Calculator

Pythagorean Calculator

Calculate the length of any missing side in a right-angled triangle.

What do you want to calculate?

Side a (Leg)

Side b (Leg)

Side c (Hypotenuse)

Please enter valid positive numbers for the required sides.

Missing Side Length

Calculation Steps

Pythagorean Theorem Formula

For any right-angled triangle with leg lengths a and b and hypotenuse c:

a² + b² = c²

The square of the hypotenuse is equal to the sum of the squares of the other two sides. Note: Hypotenuse (c) must always be longer than either leg (a or b).