Angle Converter Calculator

Angles are measured in degrees for everyday use, radians in mathematics, and gradians in surveying.

What this calculator does

π radians = 180° = 200 gradians. 1° = π/180 ≈ 0.01745 radians.

Frequently asked questions

How do you convert degrees to radians?

Multiply degrees by π/180. Example: 90° × π/180 = π/2 ≈ 1.5708 radians.