1. Convert to base units
radians = input value x input unit factor
Every supported angle unit is stored as a factor relative to radians.
Geometry unit converter
Angle Unit Converter
Convert angle units for geometry, trigonometry, surveying, machining, CAD, controls, and engineering calculations.
Live angle conversion
Convert angle units
Enter a value, choose the starting unit, and select a target unit. The full angle conversion table updates automatically.
Converted value
All units
Angle conversion table
Compare the entered value across circular, surveying, trigonometry, and small-angle units.
Common conversions
Useful angle conversion factors
| Conversion | Factor | Typical use |
|---|---|---|
| Degrees to radians | rad = deg x pi / 180 | Trigonometry and engineering formulas |
| Radians to degrees | deg = rad x 180 / pi | Readable angle output |
| Revolutions to degrees | deg = rev x 360 | Rotating systems |
| Gradians to degrees | deg = grad x 0.9 | Surveying and mapping |
| Arcminutes to degrees | deg = arcmin / 60 | Precise angular measurement |
| Milliradians to radians | rad = mrad / 1000 | Small-angle calculations |
How it works
Angle conversion method
2. Convert to target units
target value = base value / target unit factor
The selected result and table values are calculated from the same base value.
3. Check precision
rounding depends on scale
Very small and very large values use compact scientific notation to stay readable.
FAQ
Angle converter questions
How do you convert degrees to radians?
Multiply degrees by pi / 180 to convert degrees to radians.
How many degrees are in one revolution?
One full revolution is 360 degrees or 2 pi radians.
What is a milliradian?
A milliradian is one thousandth of a radian and is often used for small-angle measurement.
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