Angle Converter
Convert between degrees, radians, gradians, turns, arcminutes and arcseconds.
Processing: This tool runs entirely in your browser. Your input and any file you open stay on your device — nothing is uploaded to a server.
How to use the angle converter
- Type the amount you want to convert.
- Choose the unit you have and the unit you want.
- Read the result, or use the table showing all 6 units at once.
About this tool
Degrees are what people use; radians are what mathematics and most programming languages use. JavaScript's <code>Math.sin</code> and CSS transforms in <code>rad</code> both expect radians, which is why a value that looks right in degrees produces nonsense in code.
A full turn is 360 degrees, 2π radians or 400 gradians. Arcminutes and arcseconds subdivide a degree by 60 and 3,600, and are used in astronomy and surveying.
Common uses
- Converting a design angle into radians for code.
- Reading a bearing or coordinate given in arcminutes.
- Checking a CSS rotation value.
Frequently asked questions
- How many degrees are in a radian?
- About 57.2958 — that is 180 divided by π.
- Which unit does CSS use?
- CSS accepts deg, rad, grad and turn. Trigonometric functions in JavaScript accept radians only.
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