Right Triangle Calculator
Solve a right triangle from its two legs.
Result
Results are estimates for general information only and are not professional advice.
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 to use.
What do I need to enter to use the Right Triangle Calculator?
The Right Triangle Calculator asks for the following values (2): Leg a, Leg b. Fill them in and the result appears immediately — the calculation runs on your own device, so nothing you type is sent to a server.
How accurate is the Right Triangle Calculator?
The Right Triangle Calculator uses standard, widely-accepted formulas, so its figures are reliable estimates for everyday planning. They are not a substitute for advice from a qualified professional.
Is the Right Triangle Calculator free, and do I need an account?
Yes. The Right Triangle Calculator — and every other calculator on Calculatis — is completely free, with no registration, no download and no limit on how often you use it.