How do I use the Triangle Calculator?

Select the known values (SSS, SAS, or ASA). Enter the values in the fields. All remaining sides, angles, area, and perimeter are calculated instantly.

Is the Triangle Calculator free?

Yes, the Triangle Calculator on ToolHaven is completely free to use. No signup or registration is required.

Triangle Calculator

Solve any triangle given three known values. Calculate all sides, angles, area, and perimeter using the Law of Cosines and Sines.

Side a

Side b

Side c

How to use

Select the known values (SSS, SAS, or ASA).
Enter the values in the fields.
All remaining sides, angles, area, and perimeter are calculated instantly.

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