The angle converter works like this: it converts between degrees, radians, gradians, turns and arcminutes/arcseconds. Everything happens on your device - the input never leaves your tab unless the tool clearly states it performs a server-side lookup.
How to use the Angle Converter
Enter or paste the source value.
Confirm the source and target units or formats.
Read the converted result, which updates live as you type.
Copy the output when you are happy with it.
Features
Convert degrees to radians, gradians, turns
Instant result, no page reload
Works in any modern browser, desktop or mobile
Free with no signup
Common mistakes to avoid
Selecting a near-neighbor unit instead of the intended one
Forgetting whether a value is a rate or a total
Examples
Input
Result
180 degrees
π rad (3.14159) · 200 grad · 0.5 turn
Best used for
Getting a reliable answer for angle converter without installing an app
One-off tasks done in under a minute from any device
Checking results before committing them to something important
Working on a phone where desktop software is unavailable
Privacy
Conversion runs locally in your browser tab.
Frequently asked questions
When do I need radians?
Mathematics and most programming trig functions expect radians; calculators labelled DEG/RAD toggle the same thing.
What is a gradian?
One hundredth of a right angle (0.9 degrees) - a decimal-friendly angle unit used in some surveying and artillery traditions, supported here alongside the common units.
How many arcseconds are in a degree?
3,600 - one arcminute is 1/60 of a degree and one arcsecond is 1/60 of an arcminute, the subdivisions astronomy and optics work in.