Degrees to Radians Converter
π radians = 180°. Formula: radians = degrees × π/180. Enter any angle in degrees to convert to radians.
Formula:rad = deg × π/180
⇄ Switch to Radians To DegreesDegree to Radian — common values
1 °0.0174533 rad
30 °0.523599 rad
45 °0.785398 rad
90 °1.5707963 rad
180 °3.1415927 rad
270 °4.712389 rad
360 °6.2831853 rad
How to convert Degrees To Radians
To convert degrees to radians, use the formula: rad = deg × π/180. Enter any value in the input field above and the result appears instantly. Click the ⇄ button or use the “Switch to Radians To Degrees” link to reverse the conversion.
All conversions use precise mathematical constants validated against international SI standards (NIST and ISO 80000) and are accurate to 8 significant figures.
Frequently Asked Questions
What is the formula to convert Degrees To Radians?
rad = deg × π/180. π radians = 180°. Formula: radians = degrees × π/180. Enter any angle in degrees to convert to radians.
Is this converter free?
Yes — completely free, no registration required. Works instantly in your browser.
How do I convert Radians To Degrees?
Use the Radians To Degrees converter or click the ⇄ switch button above.
More Angle conversions
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The full converter supports all unit combinations