This right angled triangle calculator provides some functions to find the length of the hypotenuse and the area of the triangle!


⬇️ Inputs

Base (b)

Height (h)

⬆️ Outputs


Area (A)

💬 We'd love your feedback on this template! It takes 1min


A right-angled triangle is a triangle where one of the angles is a right angle (90 degrees). The hypotenuse is the longest side of a right-angled triangle, and it is always opposite to the right angle. The other two sides are called the legs, often referred to as base and height.
right-angled triangle

The area of the right-angled triangle is:

✍️ Algebraic proof of area formula

To calculate the length of the hypotenuse, we can use the Pythagorean theorem. Check out our page on Pythagorean theorem for an in-depth explanation. It's important to note that the Pythagorean theorem only applies to right-angled triangles.
The length of the hypotenuse is:

Check out this page if you are after the length of a side that is not the hypotenuse!