What is a radian?
Definition
rad
The radian (rad) is the SI unit of angular measure. One radian equals approximately 57.296 degrees. A full circle equals 2π radians.
Unit system
SI / Math
Convert radians
All angles units
| Unit | Symbol | System |
|---|---|---|
| degrees | ° | Common |
| radians | rad | SI / Math |
| gradians | grad | Metric |
| turns | turn | Common |
| arcminutes | ' | Scientific |
| arcseconds | " | Scientific |
| milliradians | mrad | Scientific |