Radians (rad) - Angle Conversions
A radian is a unit of angular measure in the International System of Units (SI). The symbol for radian is rad. A radian is equal to the angle subtended at the center of a circle by an arc of length equal to the radius of the circle. A radian is equal to 180°/π or 57.29577951 degrees.
Select a Conversion
Select one of the radian conversions below:
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