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.
| 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
When to use this tool
This tool is designed for quick, practical tasks such as everyday calculations, data formatting, or simple conversions. It is best used when you need fast results without installing software or using complex tools.
When to use
- Quick checks or one-time calculations
- Validating or converting data before using it elsewhere
- Simple tasks that do not require advanced software
When not to use
- Critical financial, legal, or medical decisions
- Large-scale or automated processing
- Situations requiring guaranteed precision beyond basic validation
Always review results before using them in important contexts.
About this tool
This tool helps you perform quick utility operations directly in your browser. It runs entirely in your browser without sending data to a server.
You can use this tool when handling simple tasks without installing additional software. The results should be interpreted as a processed output based on your input data.
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.