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Online Calculator
Pythagorean theorem calculator
Calculate the sides of a right triangle using a² + b² = c².
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Local processing
The calculation is done directly in your browser.
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Free
No registration, external API or subscription required.
Frequently asked questions
What is the formula for the Pythagorean theorem?
a² + b² = c², where c is the hypotenuse.
Can I calculate a leg of a right triangle?
Yes. If you know the hypotenuse and one leg, the calculator finds the missing leg.
What units should I use?
You can use any unit as long as both values are expressed in the same unit.
Does it work for any triangle?
No. The Pythagorean theorem applies to right triangles.