Category: Converters
Angle Converter
Convert degrees, radians, gradians, turns and more
Convert between degrees, radians, gradians, turns, arcminutes and arcseconds using fixed, published ratios.
Result1.570796
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What this tool does
Each angle unit is defined as a fixed ratio to one degree, including radians (180/π degrees) and gradians (0.9 degrees, since 400 gradians make a full turn). A conversion is a single multiplication and division, entirely in your browser.
How to use it
- Enter an angle value.
- Choose the unit you're converting from and to.
- The converted value appears immediately.
Privacy
This tool runs entirely in your browser. Your input is never uploaded, stored or shared — closing the tab removes it.
Frequently asked questions
- How many radians are in 90 degrees?
- 90 degrees equals π/2 radians, approximately 1.5708 radians.
- What is a gradian?
- A gradian (or gon) divides a full turn into 400 units instead of 360, so one gradian equals exactly 0.9 degrees.