▣ CALCULATORS Updated July 25, 2026

Pythagorean Theorem Calculator

Solve for any side of a right triangle.

Side a
Side b
Hypotenuse c
Result
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How it works

Leave the unknown side blank. The tool solves for the hypotenuse when both legs are known, or for a leg when the hypotenuse is given.

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Frequently asked questions

Which side is the hypotenuse?

The longest side, always opposite the right angle.

Why do I get an error?

The hypotenuse must be longer than either leg, otherwise no right triangle exists.

Comments

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