Result
0.0000000 rad
1 ° = 0.01745 rad
Converter Guide
Angle Converter
Degrees, radians, gradians — angle measurement connects trigonometry, engineering, navigation, and astronomy. Convert between systems cleanly and precisely.
How to Use
- Enter the angle value you want to convert.
- Select the source unit (e.g., degrees, radians).
- Select the target unit (e.g., gradians, turns).
- Conversion happens live as you type.
- Click ⇄ Invert to reverse source and target.
Use Cases
Programming
Convert degrees to radians for math libraries (sin, cos, tan).
Surveying
Use gradians for civil engineering and land measurement.
Navigation
Work in degrees, minutes, and seconds for GPS coordinates.
Physics
Apply radians for angular velocity and rotational mechanics.
Key Formulas
1 turn = 360° = 2π rad
1 radian = 180/π ≈ 57.2958°
1 degree = π/180 rad
1 gradian = 0.9°
1 arcminute = 1/60°
1 arcsecond = 1/3600°
1 radian = 180/π ≈ 57.2958°
1 degree = π/180 rad
1 gradian = 0.9°
1 arcminute = 1/60°
1 arcsecond = 1/3600°
Units Supported
DegreeRadianGradianArcminuteArcsecondTurnMilliradianAngular Mil
FAQs
▸ Why are there two systems for measuring angles?
▸ What is a gradian?
▸ How do I convert degrees to radians mentally?