Right Triangle Calculator (Sides & Angles)
Right triangle calculator: enter any two values (two sides, or a side and an angle) to get all sides, angles, area, perimeter and height.
a² + b² = c² · sin α = a/c · tan α = a/b
How to use this calculator
- Type your input in the box.
- The result updates as you type.
- Use “Copy result” or “Copy link” to share it.
Uses Pythagoras (a² + b² = c²) and SOH-CAH-TOA. The two acute angles always add up to 90°.
Frequently asked questions
Legs 3 and 4?
Hypotenuse 5, angles 36.87° and 53.13°, area 6.
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