How many milliarcsecond in 1 arcsecond? The answer is 1000. We assume you are converting between milliarcsecond and arcsecond. You can view more details on each measurement unit: milliarcsecond or arcsecond The SI derived unit for angle is the radian. 1 radian is equal to 206264806.2471 milliarcsecond, or 206264.8062471 arcsecond. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between milliarcseconds and arcseconds. Type in your own numbers in the form to convert the units!
1 milliarcsecond to arcsecond = 0.001 arcsecond
10 milliarcsecond to arcsecond = 0.01 arcsecond
50 milliarcsecond to arcsecond = 0.05 arcsecond
100 milliarcsecond to arcsecond = 0.1 arcsecond
200 milliarcsecond to arcsecond = 0.2 arcsecond
500 milliarcsecond to arcsecond = 0.5 arcsecond
1000 milliarcsecond to arcsecond = 1 arcsecond
You can do the reverse unit conversion from arcsecond to milliarcsecond, or enter any two units below:
The SI prefix "milli" represents a factor of 10-3, or in exponential notation, 1E-3.
So 1 milliarcsecond = 10-3 arcsecond.
A second of arc or arcsecond is a unit of angular measurement which comprises one-sixtieth of an arcminute, or 1/3600 of a degree of arc or 1/1296000 (approximately 7.7×10-7) of a circle. It is the angular diameter of an object of 1 unit diameter at a distance of 360×60×60/(2pi) (approximately 206,265 units), such as (approximately) 1 cm at 2.1 km, or, directly from the definition, 1 astronomical unit at 1 parsec.
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