Trigonometry · free · no sign-up
Angle Unit Converter
Convert an angle between degrees, radians and gradians.
Angle Unit Converter
Enter your values below and press Calculate to see your result instantly.
Origin Rotational State
Target Transmutation
Computed Absolute Target Trajectory
3.1416 rad
PI FRACTIONAL APPROX.
1.00 π
REVOLUTION RATIO
50% Turn
Calculations complete.
About the Angle Unit Converter
Convert an angle between degrees, radians and gradians.
How to use the Angle Unit Converter
- Enter the angle value and choose the unit you are converting from.
- Choose the unit to convert to, then press Calculate.
Formula and method
π radians = 180° = 200 gradians. So radians = degrees × π ÷ 180.
Worked example
180° = 3.1416 rad = 200 gradians. 90° = π/2 rad.
Tips
- Calculators must be in the right mode (DEG or RAD) for trigonometry.
- A full circle is 360° = 2π rad.
Frequently asked questions
What is a radian?
The angle at the centre of a circle that subtends an arc equal in length to the radius, about 57.3°.