Angle Converter
Stay inside the angle converter category while switching units instantly with the lightweight live converter.
Angle Quick Conversion Guide
Fast overviewNeed degree in radian fast? This page keeps the live result, the method, and the most useful reference details in one place.
People usually convert degree to radian when they are comparing measurement systems, reading labels, or double-checking values before using them elsewhere.
Angle Formula
Reference methodTo convert degree to radian manually, multiply the number of source units by 0.0174532925. That same conversion factor works for both small and large values, so once you know the rate, you can scale it for any input.
Angle Conversion Explanation
Manual check- Write down the value in °.
- Multiply that value by 0.0174532925.
- The result is your answer in rad.
Angle Usage Examples
Practical referencesCommon reference points are 30 ° = 0.52359878 rad, 90 ° = 1.57079633 rad and 180 ° = 3.14159265 rad.
Angle Quick Conversion Table
Reference chart| ° | rad |
|---|---|
| 1 | 0.01745329 |
| 2 | 0.03490659 |
| 5 | 0.08726646 |
| 10 | 0.17453293 |
| 25 | 0.43633231 |
| 50 | 0.87266463 |
| 100 | 1.74532925 |
| 250 | 4.36332313 |
| 500 | 8.72664626 |
| 1000 | 17.45329252 |
Measurement notes and accuracy
Reference notesCalculation Method Verified — based on standard international conversion factors and exact formulas where applicable.
This degree to radian converter uses standard international conversion factors. Results are accurate for normal reference use, although displayed decimals may be rounded for readability.
June 14, 2026
Internationally recognized conversion constants and exact formulas are used where applicable.