How many radian in 1 degree?
The answer is 0.0174532925199.

We assume you are converting between **radian** and **degree**.

You can view more details on each measurement unit:

radian or
degree

The SI derived unit for **angle** is the radian.

1 radian is equal to 57.2957795131 degree.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between radians and degrees.

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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").

A degree (or in full degree of arc), usually symbolized by the symbol °, is a measurement of plane angles, or of a location along a great circle of a sphere (such as the Earth or the celestial sphere), representing 1/360 of a full rotation.

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