rad to circle
14 unitsConvert Radian to Circle (rad to circle)
1 radian = 0.1591549431 circles. Convert radians to circles instantly, with the exact factor, the formula and a reference table of common values.
rad to circle conversion table
| rad | circle |
|---|---|
| 1 rad | 0.1591549431 circle |
| 2 rad | 0.3183098862 circle |
| 3 rad | 0.4774648293 circle |
| 5 rad | 0.7957747155 circle |
| 10 rad | 1.591549431 circle |
| 20 rad | 3.183098862 circle |
| 50 rad | 7.957747155 circle |
| 100 rad | 15.91549431 circle |
| 250 rad | 39.78873577 circle |
| 500 rad | 79.57747155 circle |
| 1000 rad | 159.1549431 circle |
What is a radian?
A radian is the angle you get when the curved edge of a circle is exactly as long as the circle's radius. That makes it the natural unit for anything involving circles, and it is the unit the International System of Units uses for angles.
One radian is about 57.3 degrees, and a full turn is 2π radians — roughly 6.28. Because radians link an angle directly to arc length, they keep formulas in mathematics, physics, and programming simple. Most calculators and code libraries expect angles in radians unless you tell them otherwise.
In writing, the radian is usually shortened to "rad". One radian is 57.29577951 degrees, and that ratio is what every number on this page is built from.
Related conversions
All angle units →Convert Radian to all angle units
| Conversion | 1 rad equals |
|---|---|
| Radian to circle | 0.1591549431 circle |
| Radian to degree | 57.29577951 ° |
| Radian to gon | 63.66197724 gon |
| Radian to grad | 63.66197724 grad |
| Radian to mil | 1018.591636 mil |
| Radian to minute | 3437.746764 arcmin |
| Radian to quadrant | 0.6366197724 quadrant |
| Radian to revolution | 0.1591549431 r |
| Radian to right angle | 0.6366197724 right angle |
| Radian to second | 206264.7897 arcsec |
| Radian to sextant | 0.9549296586 sextant |
| Radian to sign | 1.909859317 sign |
| Radian to turn | 0.1591549431 turn |