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Triangles calculators
Explore 3 free triangles calculators. Calculate in your browser with clear inputs, worked examples, and transparent methods.
3 calculators available
- Hypotenuse, Right Triangle Sides and Area
Find a right triangle’s hypotenuse, legs, acute angles, area or perimeter from compatible known measurements.
- Oblique Triangle Sides, Angles and Area: Four Methods
Solve non-right triangles from three sides, two sides and an included angle, or two angles and a side.
- Triangle Side from Perimeter, Angles and Known Sides
Find a missing triangle side from its perimeter, a selected angle and two sides, or a side with two angles.