Angle tools
Angle Converter
Convert angular measurement units for geometry, surveying, navigation, trigonometry, and rotation.
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Instant results1 radian [rad] = 57.29578 degree [deg]
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| Unit | Symbol | Conversion factor | Quick links |
|---|---|---|---|
| radian | rad | Base unit | Reference unit |
| degree | deg | 1 degree [deg] = 0.017453 rad | to rad from rad |
| gradian | gon | 1 gradian [gon] = 0.015708 rad | to rad from rad |
| arcminute | arcmin | 1 arcminute [arcmin] = 0.000291 rad | to rad from rad |
| arcsecond | arcsec | 1 arcsecond [arcsec] = 0.000005 rad | to rad from rad |
| revolution | rev | 1 revolution [rev] = 6.283185 rad | to rad from rad |
| turn | turn | 1 turn [turn] = 6.283185 rad | to rad from rad |
| quadrant | quadrant | 1 quadrant [quadrant] = 1.570796 rad | to rad from rad |
| mil (NATO) | mil | 1 mil (NATO) [mil] = 0.000982 rad | to rad from rad |
Accuracy and Sources
Angle factors use radian as the reference unit, with degree, turn, gradian, arcminute, and arcsecond relationships. Content was last reviewed on 2026-05-21. For safety-critical work, confirm results against the relevant official standard.
How angle conversion works
Angle conversion changes a measurement from one unit to another using a fixed factor or formula. Use the calculator above for instant results, then check the table and related converter links for common values.
Frequently Asked Questions
View sitemap →What is the base unit for angle?
The reference base unit used on this page is rad.
Are these angle conversions accurate?
Yes, the calculator uses the conversion factors listed on the page. For critical work, verify results with an authoritative standard.