Pythagorean Theorem Calculator

Solve right triangles using a²+b²=c².

Select which side to find, enter two known lengths.

FAQ

How do I find the hypotenuse?
Enter the two leg lengths a and b. The calculator computes c = √(a² + b²).
Can I find a missing leg instead of the hypotenuse?
Yes, leave any one side empty and enter the other two. The calculator solves for the missing side.