Angle Converter
Convert between degrees, radians, gradians, arcminutes and arcseconds.
About this calculator
Angles are measured in degrees in everyday and engineering contexts, but most math libraries, trigonometric functions and physics formulas expect radians, a unit tied to π that doesn't convert with a clean round multiplier. Manually converting between degrees, radians, gradians (used in surveying), and the finer units of arcminutes and arcseconds (used in astronomy and navigation) means remembering several different scale factors, like multiplying by π/180 for radians or dividing by 3600 for arcseconds to degrees. This calculator converts an angle value between all of these units by routing through a common base of degrees, giving an exact result for any pair. It's useful for programming trigonometric functions that expect radians, working through surveying calculations that use gradians, or converting a precise astronomical coordinate given in arcminutes and arcseconds.
Worked example
180 degrees to radians
Result: 3.1416 rad
Was this helpful?