Unit conversion
Angle Converter
Convert angles between degrees, radians, gradians, arcminutes, and arcseconds.
Interactive calculator
Convert angle units
Switch between degrees, radians, gradians, arcminutes, and arcseconds for geometry, navigation, and engineering work.
Results
Result (rad)
3.141593
180 deg = 3.141593 rad
How to use it
- 01Enter the angle you want to convert.
- 02Choose the current unit and the target angle unit.
- 03Use the converted result in geometry, trig, mapping, or engineering work.
Result guide
- Degrees serve as the shared base unit behind the conversion logic.
- Radians are useful for trigonometry and calculus, while arcminutes and arcseconds are common in navigation and precise measurement.
- The page supports both educational and technical angle conversions.
About this calculator
Angle conversion shows up in geometry, trigonometry, surveying, navigation, and engineering because different disciplines prefer different angular units.
A practical converter should not stop at degrees and radians. Arcminutes, arcseconds, and gradians add real value for technical users.
Frequently asked questions
Why are radians used so often in math?
Because radians work naturally with many trigonometric and calculus formulas, making them standard in higher-level math.
What are arcminutes and arcseconds?
They are smaller angular subdivisions used when very precise angle measurement is needed.
What is a gradian?
A gradian divides a right angle into 100 units instead of 90 degrees, so a full circle is 400 gradians.
Method and limitations
This calculator uses the formula and assumptions described on this page. We do not claim independent professional review. Direct references will be listed here when they support a specific rule or data source used by this calculator.
Results are estimates for general information. Verify current rules and assumptions before making financial, tax, or health decisions.
Read our Editorial and Verification Policy →Related calculators
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