Degrees to Radians
Convert degrees to radians with visual arc comparison
rad = deg × π/180
About this calculator
Convert degrees to radians using the formula rad = deg x pi/180. Radians are the standard angular unit in mathematics and physics. A full circle is 360 degrees or 2pi radians.
Common examples
- 90° = 1.5708 rad (pi/2)
- 180° = 3.1416 rad (pi)
- 360° = 6.2832 rad (2pi)
- 45° = 0.7854 rad (pi/4)
- 60° = 1.0472 rad (pi/3)