Use the below online Second of arc to Milliradian converter to convert an angle second of arc to milliradian:

A Milliradian, often called as mil or mrad is a unit of measurement of an angle which is defined as a thousanth of the radian (0.001 radian), meaning that a full circle of 360 degree equals to 2000π or approximately 6283 milliradians.

## 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 second of arc to milliradian

A Second of arc = 1/3600 degree
Then, 1° = 3600 arcsec
A full circle (360°) = 2000π milliradians
Therefore, 3600 arcsec = 2000π/360 milliradians
Then, 1 arcsec = (2000π/360)/3600 = 0.0048 milliradians
Thus 1 arcsec = 0.0048 mrad

### Example 1:

Convert 15 second of arc to milliradian
Therefore, 15 arcsec = 15 * 0.0048 = 0.072 mrad

### Example 2:

Convert 50 second of arc to milliradian
Therefore, 50 arcsec = 50 * 0.0048 = 0.24 mrad

00
10.0048
20.0096
30.0144
40.0192
50.024
60.0288
70.0336
80.0384
90.0432
100.048
110.0528
120.0576
130.0624
140.0672
150.072
200.096
500.24
1000.48