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Calculator Tools
Trigonometry Calculators

Right Triangle Calculator

Solve a right triangle from two legs: hypotenuse, both acute angles, area, perimeter and altitude to the hypotenuse.

Enter values

Results update as you type.

Result

Hypotenuse

10

Angle A (opposite a)
36.8699 °
Angle B (opposite b)
53.1301 °
Area
24
Perimeter
24
Altitude to hypotenuse
4.8

About the Right Triangle Calculator

Solve a right triangle from two legs: hypotenuse, both acute angles, area, perimeter and altitude to the hypotenuse.

Also known as: right angle triangle, right triangle solver, soh cah toa calculator, 90 degree triangle.

How to use this calculator

  1. Enter leg a, leg b.
  2. The result updates instantly as you type — press Calculate (or Enter) at any time.
  3. Review the breakdown shown under the main result.
  4. Use Copy result or Share to save the answer or send a link with your inputs.

Formula

SOH CAH TOA · c = √(a² + b²)

Worked example

Using the values pre-filled in the calculator above:

  • Leg a = 6
  • Leg b = 8

the calculator returns:

  • Hypotenuse: 10
  • Angle A (opposite a): 36.8699 °
  • Angle B (opposite b): 53.1301 °
  • Area: 24