Unit Kit
Free Angle Converter — Degrees, Radians & Gradians
Convert between 5 angle units including degrees, radians, gradians, arcminutes, and arcseconds. Instant results, no sign-up.
FAQ
What angle units are supported?
5 units: degree (°), radian (rad), gradian (grad), arcminute ('), and arcsecond (").
How do I convert degrees to radians?
Multiply degrees by π/180. For example, 180° = π radians, 90° = π/2 radians.
What is a radian?
A radian is the angle subtended by an arc equal in length to the radius. There are 2π radians in a full circle (≈ 6.283 rad = 360°).
What is a gradian?
A gradian divides a right angle into 100 parts. 100 grad = 90° = π/2 rad. Used in some engineering fields.
How many arcminutes are in a degree?
1 degree equals 60 arcminutes, and 1 arcminute equals 60 arcseconds.