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Convert between degrees, radians, gradians, and more
Degree to Radian
| Degree | Radian |
|---|---|
| 1 ° | 0.017453 rad |
| 5 ° | 0.087266 rad |
| 10 ° | 0.174533 rad |
| 25 ° | 0.436332 rad |
| 50 ° | 0.872665 rad |
| 100 ° | 1.745329 rad |
| 500 ° | 8.726646 rad |
| 1,000 ° | 17.453293 rad |
Type the number you want to convert in the input field
Choose your source and target units from the dropdowns
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Quick reference for frequently used angle conversions
180°
= π rad
Degrees to Radians
90°
= 100 grad
Degrees to Gradians
1 rad
= 57.296°
Radian to Degrees
360°
= 1 turn
Full circle
Understand angle measurements with everyday examples
90°
A right angle (corner of a square)
180°
A straight line
360°
A full rotation
π rad
Half a circle (180°)
Common questions about angle conversion
One radian equals approximately 57.2958 degrees. To convert radians to degrees, multiply by 180/π (approximately 57.2958).
A gradian (also called gon or grade) is a unit of angle where a right angle equals 100 gradians. A full circle is 400 gradians.
To convert degrees to radians, multiply by π/180. For example, 90° = 90 × π/180 = π/2 radians ≈ 1.5708 radians.
Complete list of 16 angle units supported