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Excel RADIANS Function

The RADIANS function converts degrees to radians.

radians function 1




  • angle (required): An angle in degrees to convert to radians.

Return Value

The RADIANS function returns an angle in radians.

Function Notes

  • To convert radians to degrees, use the DEGREES function.
  • 180° in radians equals to 3.142 or π (pi).


To convert the angles in degrees listed in the table as shown below to radians, please copy or enter the below formula in the top cell (D6) of the result list, and press Enter to get the result. Then select the result cell, and drag the fill handle (the small square in the lower-right corner of the selected cell) down to apply the formula to the below cells.


radians function 2

Instead of a cell reference, you can type the actual angle value in the formula as shown below.


Related functions

Excel DEGREES Function

The DEGREES function converts an angle in radians to an angle in degrees.

Excel PI Function

The PI function returns the number 3.14159265358979 of the mathematical constant called pi.

Excel SQRTPI Function

The SQRTPI function calculates the square root of a supplied number multiplied by pi (π).

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