Pythagorean Theorem Calculator

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Solve any side of a right triangle from the other two using the Pythagorean theorem, plus its area, perimeter and the two non-right angles. Free and instant.

b a c

Enter any two sides and leave the unknown one blank to solve it.

Leave exactly one field blank. Sides a and b are the legs; side c is the hypotenuse, the longest side opposite the right angle.
Solved side –
Area –
Perimeter –
Angle at a (opposite a) –
Angle at b (opposite b) –
Based on a² + b² = c². Area = ½ × a × b; angles are found with the arctangent of the legs.
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