Right Triangle Solver
All sides and angles from any 2 inputs
Enter any 2 of the 5 values below (c = hypotenuse, A + B = 90°)
Enter any 2 values
📚 Learn more — how it works, FAQ & guide Click to expand
Learn more — how it works, FAQ & guide
Click to expand
Right triangle solver
Solve any right triangle from 2 given values. SOH-CAH-TOA + Pythagorean theorem.
How to use this tool
- 1
Enter any 2 inputs
Two sides, or one side and one acute angle.
- 2
See all 6 values
Sides a, b, c plus angles A, B, C (C is always 90°).
- 3
See area + perimeter
Automatically computed.
Frequently Asked Questions
SOH-CAH-TOA
Sine = Opposite/Hypotenuse. Cosine = Adjacent/Hypotenuse. Tangent = Opposite/Adjacent.
Naming convention
c is hypotenuse (opposite the 90° angle). a is opposite angle A. b is opposite angle B. A + B = 90°.
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100% Privacy. This tool runs entirely in your browser. Your data is never uploaded to any server.