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Right Triangle Calculator

Solve a right triangle from any two known values — sides or angles.

Enter any two known values (sides a, b, hypotenuse c, or angles A, B). Angle C = 90°.

Side a (opposite A)

Side b (adjacent A)

Hypotenuse c

Angle A (°)

Angle B (°)

Side a

Side b

Hypotenuse c

Angle A (°)

Angle B (°)

Angle C (°)

sin A

cos A

tan A

Area

Perimeter

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About Right Triangle Calculator

Our free Right Triangle Calculator helps you run quick, accurate calculations for everyday financial and mathematical needs with just a few inputs. Solve a right triangle from any two known values — sides or angles. Enter your values, and the calculator instantly shows detailed results with breakdowns you can understand. No signup, no ads interrupting your workflow — just accurate, reliable calculations you can trust. Works on any device, saves nothing to our servers.

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