How many radian in 1 revolution?
The answer is 6.28318530718.

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

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revolution

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

1 radian is equal to 0.159154943092 revolution.

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

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

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You can do the reverse unit conversion from revolution to radian, or enter any two units below:

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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").

The full circle or full turn or cycle or rotation or revolution uses k = 1/2pi, making the angle of 1 full circle = 2pi rad = 4 right angles = 400 gon = 360°.

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