Angle Converter
Convert angles between degrees, radians and gradians instantly with this free angle unit converter that works in your browser.
Convert angle
Result
0.017453
1 Degrees (°) = 0.017453 Radians (rad)
All units
- Degrees (°)
- 1
- Radians (rad)
- 0.017453
- Gradians (gon)
- 1.111111
- Arcminutes (′)
- 60
- Arcseconds (″)
- 3,600
- Turns
- 0.002778
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter the amount you want to convert.
- Choose the unit you have (From) and the unit you want (To).
- Read the result instantly — every other unit is listed too.
How it works
Converts between degrees, radians (180° = π rad) and gradians (200 gon = 180°).
Worked example
180°. = π radians ≈ 3.1416 = 200 gradians.
Frequently asked questions
How many radians are in 180 degrees?
π radians (about 3.1416). A full circle is 360° = 2π rad, and 200 gradians = 180°.
How accurate are the conversions?
They use standard conversion factors at full device precision, so they're reliable for everyday and professional use.
Does it work offline and stay private?
Yes — the conversion runs entirely in your browser, with no sign-up and nothing sent to a server.
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Cite this tool
Zerdly. (2026). Angle Converter. Retrieved from https://www.zerdly.com/tools/angle-converter/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.