Method
For a right triangle, a² + b² = c², where c is the hypotenuse opposite the right angle.
Example
Legs of 3 m and 4 m produce a 5 m hypotenuse.
Limits
Check inputs and units. Important academic, financial or professional decisions should be confirmed against an appropriate source.
Common questions
What does the right triangle calculator calculate?
Use the Pythagorean theorem to solve a missing side.
Does this right triangle calculator show its method?
Yes. The result includes the central formula or working needed to check the answer.
Are my values uploaded?
No. The calculation runs in this browser and does not require an account.