Pythagorean Theorem Calculator

For a right triangle with legs a and b and hypotenuse c: a² + b² = c². Enter two sides to find the third, or check three sides.

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Solve for

Positive numbers up to 100,000, with at most 3 decimal places. Any unit works, as long as all sides use the same one.

Practice: find the missing side

Answer in simplified radical form (type 3√13 or 3sqrt13) or as a decimal rounded to 2 places.

Examples: 13, 5√2, 7.07

Score: 0 / 0 correct