Pythagorean Theorem Calculator

Calculate hypotenuse

Calculate cathetus


Developed at first by the ancient Babylonians and wrongly attributed by the western culture to Pythagoras, the Pythagorean theorem describes the relation of the 3 sides of a triangle, stating that the squared length of the side opposite of the right angle is equal to the squared lengths of both remaining sides added together.

Equation form:

a² + b² = c²

About Pythagorean Theorem Calculator tool.

Remember this tool should be used only to length of sides in rightangled triangle. The results we provide are accurate, but rounded to the 12th decimal place. It accepts scientific notation and converts immediately.