Seconds Of Arc to Circles Conversion
Enter the angle in seconds of arc below to get the value converted to circles.
How to Convert Seconds Of Arc to Circles

To convert a second of arc measurement to a circle measurement, divide the angle by the conversion ratio.
Since one circle is equal to 1,296,000 seconds of arc, you can use this simple formula to convert:
The angle in circles is equal to the seconds of arc divided by 1,296,000.
Seconds of arc and circles are both units used to measure angle. Keep reading to learn more about each unit of measure.
Seconds Of Arc
The second of arc is a unit of angle equal to 1/60th of one minute of arc or 1/3,600 of one degree.
A second of arc is sometimes also referred to as an arc second or arcsecond. Seconds of arc can be abbreviated as arcsec, and are also sometimes abbreviated as asec. For example, 1 second of arc can be written as 1 arcsec or 1 asec.
The second of arc is most commonly expressed using a double prime (″), though a double quote is often used as well. For example, 1 second of arc is most often written as 1″.
Circles
A circle is the equivalent of 1 revolution around a circle, or 360°.
A circle is sometimes also referred to as a revolution. Circles can be abbreviated as cir; for example, 1 circle can be written as 1 cir.
Second Of Arc to Circle Conversion Table
Seconds Of Arc | Circles |
---|---|
1" | 0.0000007716 cir |
2" | 0.0000015432 cir |
3" | 0.0000023148 cir |
4" | 0.0000030864 cir |
5" | 0.000003858 cir |
6" | 0.0000046296 cir |
7" | 0.0000054012 cir |
8" | 0.0000061728 cir |
9" | 0.0000069444 cir |
10" | 0.000007716 cir |
100" | 0.00007716 cir |
1,000" | 0.000772 cir |
10,000" | 0.007716 cir |
100,000" | 0.07716 cir |
1,000,000" | 0.771605 cir |
10,000,000" | 7.716 cir |