Convert angles between degrees, radians, gradians, arcminutes, arcseconds, and full turns. Angles are measured differently across math, engineering, surveying, and navigation, and mixing degrees with radians is a classic source of bugs and errors. This converter uses exact relationships, with a full turn equal to 360 degrees, 2 pi radians, or 400 gradians, so the results are precise. It is useful for trigonometry homework, CAD work, rotating parts, and reading survey bearings. Choose the unit you have and the one you want, type a value, and the answer updates live as you type. Because it runs entirely in your browser, the tool is instant, keeps your input private, and continues to work without an internet connection after the first load.