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Right Triangle Calculator

Solve a right triangle from its two legs.

Solving a right triangle

Given the two legs of a right triangle, this calculator finds the hypotenuse, both acute angles, the area and the perimeter — everything you need to fully describe the triangle.

Frequently Asked Questions

What is the Right Triangle Calculator?

Solve a right triangle from its two legs. It runs instantly in your browser and is completely free.

Is the Right Triangle Calculator free and does it require signup?

Yes. Every calculator on Calculatis is 100% free with no registration, and the values you enter are never stored.

How accurate is the Right Triangle Calculator?

It uses standard, widely-accepted formulas. Results are reliable estimates for general use and are not a substitute for professional advice.