Solve any triangle — enter three known values (sides and/or angles) and calculate all remaining sides, angles, area, and perimeter.
Three sides known
Results
Scalene RightSide a
3
Angle A
36.870°
Side b
4
Angle B
53.130°
Side c
5
Angle C
90.000°
Area
6 units²
Perimeter
12.000 units
Yes, Triangle Calculator is completely free to use on UtilityCove.
No. Triangle Calculator runs in your browser, so your input stays on your device.
Yes. Triangle Calculator works on modern mobile and desktop browsers.
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