Angle Converter

Convert between degrees, radians, and gradians.

Angle Converter

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Converted Values

About Angles

Angles measure rotation or the space between two lines meeting at a point. Degrees are the most common everyday unit; radians are standard in mathematics and physics.

Gradians (grad) are used in surveying — a full circle is 400 grad, making right angles an exact 100 grad.

Quick Reference

Unit	Full circle
Degree (°)	360°
Radian (rad)	2π ≈ 6.2832
Gradian (grad)	400
Turn	1

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Pro Tips

To convert degrees to radians, multiply by π/180 ≈ 0.01745. For radians to degrees, multiply by 180/π ≈ 57.296.

Most programming languages (Math.sin, Math.cos) use radians, not degrees — always convert before use.