Degrees to Radians
Convert degrees to radians with visual arc comparison
About this calculator
Convert degrees to radians using the formula rad = deg x pi/180. Radians are the standard angular unit in mathematics and physics. A full circle is 360 degrees or 2pi radians.
How to use the Degrees to Radians converter
- Enter your value into the input field.
- Read the converted result.
- Adjust the input to try other values instantly.
- Copy the page URL to share the exact conversion.
Common examples
- 90° = 1.5708 rad (pi/2)
- 180° = 3.1416 rad (pi)
- 360° = 6.2832 rad (2pi)
- 45° = 0.7854 rad (pi/4)
- 60° = 1.0472 rad (pi/3)
Frequently asked questions
How does the Degrees to Radians converter work?
Enter a value in the source unit and the calculator applies the standard conversion factor (or temperature formula, where relevant) to give you the equivalent value in the target unit. The result updates as you type.
When would I use a Degrees to Radians converter?
Whenever you need to translate a quantity between two units of measurement — common cases include travel, cooking, shipping, engineering, science homework, and reading product specifications written in a different system.
How accurate is the Degrees to Radians converter?
Conversions use the standard definitions of each unit and full-precision arithmetic. The displayed value is rounded for readability, but the underlying calculation keeps higher precision so repeated conversions do not drift.
Can I share a specific conversion with someone else?
Yes. Every value you enter updates the URL, so copying the address bar and sharing the link reopens the exact same conversion for whoever clicks it.