Degrees to Radians Converter
Convert degrees (°) to radians (rad). Includes rounding controls, common reference angles, and input validation.
Enter degrees then convert. Press Ctrl/Cmd + Enter.
Result will appear here.
| Reference | Degrees | Radians |
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Privacy: runs locally in your browser. No inputs are stored or transmitted.
How it works
Radians = degrees × π / 180
Reverse: Degrees = radians × 180 / π
Examples
- 180° = π rad
- 90° = π/2 rad
- 45° = π/4 rad
FAQ
- What is the formula for degrees to radians?
Radians = degrees × π / 180.
- What is 180 degrees in radians?
180 degrees equals π radians.
- Can degrees be negative?
Yes. Negative angles are supported and commonly used to show rotation direction.
- Are my inputs stored?
No. All calculations run locally in your browser.