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A second of arc, or arcsecond (arsec) is 1/60 of an arcminute, 1/3600 of a degree, 1/1296000 of a turn, and π/648000 (about 1/206265) of a radian.
In relation to the base unit of [angle] => (radians), 1 Diameter Parts (Ø part) is equal to 0.01666666666 radians, while 1 Second Of Arc (SOA) = 4.848137E-6 radians.| 72 Diameter Parts | to common angle units |
|---|---|
| 72 Ø part | = 1.19999999952 radians (rad) |
| 72 Ø part | = 1199.99999952 milliradians (mrad/mil) |
| 72 Ø part | = 1222.309594234 angular mils (µ mil) |
| 72 Ø part | = 68.754932706927 degrees (°deg) |
| 72 Ø part | = 76.3943739567 gradians (grad) |
| 72 Ø part | = 4125.2990825335 arcminutes (arcmin) |
| 72 Ø part | = 247517.75775313 arcseconds (arcsec) |
| 72 Ø part | = 1.1459150986919 sextants (60°) |
| 72 Ø part | = 2.2918258203209 signs (30°) |
| 72 Ø part | = 0.19098578898935 turns (t) |