Right Triangle Calculator | Fast & Accurate Geometry Tool
A right triangle has one 90° angle. Moreover, its sides follow the Pythagorean theorem.

Right Triangles

Right triangles are fundamental in geometry. Significantly, they have one 90-degree angle.

These triangles appear everywhere. For example, in construction, navigation, and trigonometry.

Specifically, the longest side is the hypotenuse. Consequently, it's opposite the right angle.

Pythagorean theorem relates all sides. Basically, a² + b² = c² defines their relationship.

Additionally, trigonometric ratios apply here. Therefore, sine, cosine, and tangent are useful.

Essentially, right triangles solve real problems. For instance, calculating distances or heights.

A
B
90°
a
b
c (hypotenuse)

Our calculator simplifies these calculations. Ultimately, it saves time and reduces errors.

Right Triangle Calculator

Hypotenuse: -
Area: -
Perimeter: -
Angle A: -
Angle B: -

How to Calculate a Right Triangle

1
Identify known values. Specifically, any two sides or one side with one angle.
2
Apply the Pythagorean theorem for sides: a² + b² = c² (c is hypotenuse).
3
Calculate missing sides. Then, use trigonometric functions for angles.
4
Compute area with: Area = 0.5 × a × b.
5
Determine perimeter: Perimeter = a + b + c.