How do I use Angle Converter?

Type or paste your data into the field on this page and press the button. The result is calculated instantly in your browser — nothing is uploaded.

Is Angle Converter free?

Yes, Angle Converter is completely free. No signup, no downloads and no usage limits.

Angle Converter

NewCalculation

Convert angles between degrees, radians and gradians in real time. Type in any unit and the others update instantly. Free, works in your browser.

Degrees (°)

Radians (rad)

Gradians (grad)

180° = π rad

Type a value into any field and the others update instantly. This tool rounds results to eight decimal places for readability.

Why convert angles?

Degrees are used in everyday life, radians in mathematics and programming, and gradians in surveying and some engineering. Converting between them is a constant need.

What are the relationships?

A full circle is 360 degrees, 2π radians or 400 gradians. So 180 degrees equals π radians and 100 gradians, the conversion used by this tool.

Why do programmers use radians?

JavaScript and most math libraries expect angles in radians for functions like Math.sin and Math.cos. Typing the value here and copying the result avoids unit mistakes.

Can I type decimals?

Yes. Values like 45.5 degrees are accepted, and the two other units update instantly with results rounded to eight decimal places.

Is the conversion exact?

The formulas are exact math; rounding is applied only for display. Converting 180 degrees always gives π radians, so no information is lost.

Frequently Asked Questions

What is Angle Converter?
Convert angles between degrees, radians and gradians instantly.
How do I use Angle Converter?
Type or paste your data into the field on this page and press the button. The result is calculated instantly in your browser — nothing is uploaded.
Is Angle Converter free?
Yes, Angle Converter is completely free. No signup, no downloads and no usage limits.