Angle Conversions
3 units · 6 converters
Convert between degrees, radians and gradians. Exact factors for geometry, navigation, engineering and programming.
Degree(°)
A degree is 1/360 of a full circle, the everyday angle unit inherited from Babylonian astronomy. Maps, compasses, geometry classes and weather use degrees.
Radian(rad)
A radian is the angle subtended by an arc equal in length to the radius, with π radians in a half circle (about 57.2958°). It is the natural angle unit in mathematics and programming.
Gradian(gon)
A gradian (gon) is 1/400 of a full circle, so a right angle is exactly 100 gradians. It is used in surveying and some European engineering fields for decimal-friendly math.