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Right Triangle Calculator

Enter the base and height of a right triangle to find the hypotenuse, area, perimeter and angles, with a drawing.

How it works Report a problem

Right Triangle Calc

Dynamic mapping of Base & Height

About the Right Triangle Calculator

Enter the base and height of a right triangle to find the hypotenuse, area, perimeter and angles, with a drawing.

How to use the Right Triangle Calculator

  1. Enter the Base (b) and Height (h).
  2. Press Visualize & Solve.

Formula and method

Hypotenuse c = √(b² + h²), area ½ × b × h and angle θ = arctan(h ÷ b).

Worked example

A base of 3 and height of 4 give a hypotenuse of 5, an area of 6 and angles of 36.87° and 53.13°.

Tips

  • The two acute angles add up to 90°.

Frequently asked questions

What is a right triangle?
A triangle with one 90° angle.