Use the below online Radian to Second of arc converter to convert an angle radian to second of arc:

Radian is a unit of measurement of an angle. Radian of one circle is the length of circumference divided by the radius or 2πr/r or 2π. Therefore a full circle has 2π radians which is equal to 360 degrees. Thus one radian is equal to 180/π degrees.

## Second of arc

A Second of arc or arcsecond is a unit of measurement of an angle which is equal to 1/60 of an arcminute or 1/3600 of a degree or π/648000 of a radian. The standard symbol for the arcsecond is the double prime(“) or double quote. Thus One arcsecond is written as 1”. It is also abbreviated as arcsec or asec.

## How to convert radian to second of arc

1° = 3600 arcsecond
Therefore π/180 radians = 3600 arcsecond
Then 1 radian = 3600*180/π = 648000/π arcsecond
Thus 1 radian = 206265 arcsecond

### Example 1:

Convert 15 radian to second of arc
Therefore, 15 rad = 15 * 206265 = 3093975 asec

### Example 2:

Convert 50 radian to second of arc
Therefore, 50 rad = 50 * 206265 = 10313250 asec

00
1206265
2412530
3618795
4825060
51031325
61237590
71443855
81650120
91856385
102062650
112268915
122475180
132681445
142887710
153093975
204125300
5010313250
10020626500