Right Triangle Calculator

Calculate missing sides, acute angles, area, perimeter, and hypotenuse from common right-triangle inputs.

Leg a

Leg b

Hypotenuse = 5Right triangle from two legs

6Area

12Perimeter

36.869898°Angle A

53.130102°Angle B

How to use this Right Triangle Calculator

Solve a right triangle from two known values. Enter your values above and the result is calculated directly in your browser. No account is required.

Fast answer, clear inputs

This tool is built around one job: give the answer quickly without forcing a signup or hiding the result. Related tools are linked nearby when the next calculation or conversion is useful.