Pythagorean Theorem Calculator

Calculate the missing side of a right triangle using the Pythagorean theorem: a² + b² = c²

Triangle Sides

Enter any 2 known values to calculate the third side. Leave the unknown side empty.

Side a (leg)

Side b (leg)

Side c (hypotenuse)

Enter 2 valid positive numbers to calculate the third side.

Result

Calculated using the Pythagorean theorem

No result yet

Enter 2 valid positive numbers to see the calculation