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Sources and Accuracy
Angle conversions use radian as the reference unit. Degree, arcminute, arcsecond, turn, and surveying units are converted through fixed factors.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
About These Units
degree [deg]
Definition
The degree is an angle unit equal to one 360th of a full turn.
History
Degrees come from sexagesimal angle division and have long use in geometry and astronomy.
Current use
Degrees are used for geometry, navigation, maps, construction, engineering, weather direction, and rotations.
turn [turn]
Definition
The turn (turn) is a angle unit used to express measurements in this converter.
History
This unit is included because it appears in practical measurement systems, technical references, product specifications, or everyday conversion needs.
Current use
Use turn when comparing angle values, checking specifications, converting between systems, or preparing quick estimates.