Unit of Measure Conversions
Geometry (plane angle) Conversions
Additional Units and Information
| Name | Symbol | Value | Description/Notes |
|---|---|---|---|
| radian | rad | 57.296° | Angle at the centre of a circle which describes an arc on the circumference equal in length to the radius of the circle (2π radians = 360°) |
| steradian | sr | ≈ 65° | Solid angle at the centre of a sphere which describes a circular area on the surface equal in size to the square of the sphere's radius |