Radian (rad)

A radian (rad) is the SI unit of angle where the arc length equals the radius. One radian ≈ 57.3°. A full circle is 2π radians (≈6.28 rad). Radians are essential in calculus, physics, and engineering. Trigonometric functions in most programming languages use radians.

Convert From Radians

radians to degrees radians to gradians radians to turns radians to arcminutes radians to arcseconds Radian to Milliarcsecond radians to milliradians Radian to Compass Point Radian to Quadrant Radian to Sextant Radian to Sign

Convert To Radians

degrees to radians gradians to radians turns to radians arcminutes to radians arcseconds to radians Milliarcsecond to Radian milliradians to radians Compass Point to Radian Quadrant to Radian Sextant to Radian Sign to Radian

Conversion Factors

1 rad 57.295779513 °

1 rad 63.661977237 grad

1 rad 0.1591549431 turn

1 rad 3437.7467707 ′

1 rad 206264.80608 ″

1 rad 206264641.24 mas

1 rad 1000 mrad

1 rad 5.0929581789 point

1 rad 0.6366197724 quadrant

1 rad 0.9549296586 sextant

1 rad 1.9098593171 sign

Related Units

Degree (°) Gradian (grad) Turn (turn) Arcminute (′) Arcsecond (″) Milliarcsecond (mas) Milliradian (mrad) Compass Point (point) Quadrant (quadrant) Sextant (sextant) Sign (sign)