The Excel RADIANS Function

Radians & Degrees

The conversion between Degrees and Radians is calculated by the relationship

180 degrees = π radians

where π is the mathematicial constant, PI = 3.14159265358979...

For further information on the units of measurement for angles, see the Wikipedia 'Angle' page.
Related Function:
DEGREES Function

Basic Description

The Excel Radians function converts radians into degrees.

The syntax of the function is:

RADIANS( angle )

where the angle argument is the angle, in degrees, that is to be converted into radians.


Radians Function Examples

The spreadsheets below show four examples of the Excel Radians function.

 Formulas:
 A
1=RADIANS( 50 )
2=RADIANS( -180 )
3=RADIANS( 180 )
4=RADIANS( 360 )
 Results:
 A
10.872664626
2-3.141592654
33.141592654
46.283185307

Note that in the above example spreadsheet, 180 degrees converts to π radians and 360 degrees converts to 2π radians.


Further details of the Excel Radians function are provided on the Microsoft Office website.