All angle units explained
| Unit | Symbol | Value in Degree | Description |
|---|---|---|---|
| Degree | ° | 1 ° | A degree is 1/360 of a full turn. |
| Radian | rad | 57.29577951 ° | A radian is the angle where the arc length equals the radius (about 57.2958°). |
| Gradian | grad | 0.9 ° | A gradian is 1/400 of a full turn, used in surveying. |
| Arcminute | ′ | 0.0166666667 ° | An arcminute is 1/60 of a degree. |
| Arcsecond | ″ | 0.0002777778 ° | An arcsecond is 1/60 of an arcminute. |
Popular angle conversions
Each conversion below has its own page with a formula, worked example and table.
When do you need a angle converter?
Angle conversions are used for geometry, trigonometry homework, engineering drawings and navigation. Different countries and industries use different units, so a reliable converter prevents costly mistakes.
Frequently asked questions
Which angle units are supported?
Degree (°), Radian (rad), Gradian (grad), Arcminute (′), Arcsecond (″).
Is the converter free?
Yes, completely free with no limits, and it works offline once loaded.
How accurate are the results?
Conversions use exact standard factors with full double-precision arithmetic.