Right Triangle Calculator

Two inputs fully determine a right triangle — sides or angles alike.

Leg a

Leg b

Hypotenuse c

Angle A opposite a

Enter the required values above to see your result.

How the Right Triangle Calculator works

The calculation follows the standard method used across the US — no shortcuts, no hidden assumptions. Here is exactly what happens behind the scenes:

How does the Right Triangle Calculator work?

Enter your numbers above and results update instantly using standard formulas, computed entirely on your device.

Is the Right Triangle Calculator free to use?

Yes — completely free with no signup required, and it works on phones, tablets, and desktops.

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