›› Measurement unit: radian

Full name: radian

Plural form: radians

Symbol: rad

Alternate spelling: c

Category type: angle

Scale factor: 1


›› SI unit: radian

The SI derived unit for angle is the radian.


›› Convert radian to another unit

Convert radian to  

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›› Definition: Radian

In mathematics and physics, the radian is a unit of angle measure. It is the SI derived unit of angle. It is defined as the angle subtended at the center of a circle by an arc of circumference equal in length to the radius of the circle. Angle measures in radians are often given without any explicit unit. When a unit is given, sometimes the abbreviation rad is used, sometimes the symbol c (for "circular").


›› Sample conversions: radian

radian to point
radian to 1/6 circle
radian to 1/2 circle
radian to degree
radian to 1/16 circle
radian to arcsecond
radian to 1/4 circle
radian to grad
radian to percent
radian to full circle