About the Angle Converter
What is the Angle Converter?
Maths uses radians, surveying uses degrees or gradians and astronomy uses arcseconds. This angle converter covers them all.
Enter an angle to see it in every unit.
How to use the Angle Converter
- Value (sample: 180)
- From (sample: Degree (°))
- To (sample: Radian (rad))
- Press Convert (results also refresh as you type). The result card shows the Converted Value, along with Result, Conversion factor and Reverse factor.
Formula used
radians = degrees × π ÷ 180
- Full turn = 360° = 2π rad = 400 gon = 6,400 mil
Worked example
These are the sample values already filled in the calculator above, and the result it returns for them:
| Input | Sample value |
|---|---|
| Value | 180 |
| From | Degree (°) |
| To | Radian (rad) |
| Result | Value |
|---|---|
| Converted Value | 3.141593 rad |
| Result | 180 ° = 3.14159 rad |
| Conversion factor | 1 ° = 0.017453293 rad |
| Reverse factor | 1 rad = 57.29578 ° |
Tips for using the Angle Converter
- Set your scientific calculator to the same mode (DEG or RAD) as your inputs.
- 1° = 60 arcminutes = 3,600 arcseconds.