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The radian (symbol rad) is the standard unit of angular measure. The radian is determimed by the circumference of a circle that is equal in length to the radius of the circle. ..more definition+
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 Radians (rad) is equal to 1 radians, while 1 Second Of Arc (SOA) = 4.848137E-6 radians.| 1 Radians | to common angle units |
|---|---|
| 1 rad | = 1 radians (rad) |
| 1 rad | = 1000 milliradians (mrad/mil) |
| 1 rad | = 1018.5913289357 angular mils (µ mil) |
| 1 rad | = 57.29577727869 degrees (°deg) |
| 1 rad | = 63.661978322714 gradians (grad) |
| 1 rad | = 3437.7492368197 arcminutes (arcmin) |
| 1 rad | = 206264.79821012 arcseconds (arcsec) |
| 1 rad | = 0.95492924929192 sextants (60°) |
| 1 rad | = 1.9098548510313 signs (30°) |
| 1 rad | = 0.15915482422145 turns (t) |
| Radians | to Second Of Arc (table conversion) |
|---|---|
| 1 rad | = 206264.79821012 SOA |
| 2 rad | = 412529.59642023 SOA |
| 3 rad | = 618794.39463035 SOA |
| 4 rad | = 825059.19284047 SOA |
| 5 rad | = 1031323.9910506 SOA |
| 6 rad | = 1237588.7892607 SOA |
| 7 rad | = 1443853.5874708 SOA |
| 8 rad | = 1650118.3856809 SOA |
| 9 rad | = 1856383.183891 SOA |
| 10 rad | = 2062647.9821012 SOA |
| 20 rad | = 4125295.9642023 SOA |
| 30 rad | = 6187943.9463035 SOA |
| 40 rad | = 8250591.9284047 SOA |
| 50 rad | = 10313239.910506 SOA |
| 60 rad | = 12375887.892607 SOA |
| 70 rad | = 14438535.874708 SOA |
| 80 rad | = 16501183.856809 SOA |
| 90 rad | = 18563831.83891 SOA |
| 100 rad | = 20626479.821012 SOA |
| 200 rad | = 41252959.642023 SOA |
| 300 rad | = 61879439.463035 SOA |
| 400 rad | = 82505919.284047 SOA |
| 500 rad | = 103132399.10506 SOA |
| 600 rad | = 123758878.92607 SOA |
| 700 rad | = 144385358.74708 SOA |
| 800 rad | = 165011838.56809 SOA |
| 900 rad | = 185638318.3891 SOA |
| 1000 rad | = 206264798.21012 SOA |
| 2000 rad | = 412529596.42023 SOA |
| 4000 rad | = 825059192.84047 SOA |
| 5000 rad | = 1031323991.0506 SOA |
| 7500 rad | = 1546985986.5759 SOA |
| 10000 rad | = 2062647982.1012 SOA |
| 25000 rad | = 5156619955.2529 SOA |
| 50000 rad | = 10313239910.506 SOA |
| 100000 rad | = 20626479821.012 SOA |
| 1000000 rad | = 206264798210.12 SOA |
| 1000000000 rad | = 2.0626479821012E+14 SOA |