Angle converter
Radians use π, represented to JavaScript floating-point precision. Degrees and gradians describe the same angle.
Edit either value. Use a decimal point; commas group thousands. Rounding affects display only.
How to convert degrees to radians
Choose any of the 6 supported units. All conversions within this category share the same calculation engine.
Formula coefficients shown rounded. Calculations use the stored factors before display rounding.
A worked example
For 10 °, the result is approximately 0.1745329252 rad. To go the other way, edit the result above or swap the units.
Radians use π, represented to JavaScript floating-point precision. Degrees and gradians describe the same angle.
Where the numbers come from
Factors follow NIST conversion references and documented unit definitions. Read our accuracy and rounding notes.
The table and method describe this page’s original pair. Changing units above does not change this reference section.
| Degrees (°) | Radians (rad) |
|---|---|
| 1 | 0.01745329252 |
| 2 | 0.03490658504 |
| 5 | 0.0872664626 |
| 10 | 0.1745329252 |
| 20 | 0.3490658504 |
| 25 | 0.436332313 |
| 50 | 0.872664626 |
| 100 | 1.745329252 |
| 500 | 8.72664626 |
| 1000 | 17.45329252 |