Milliarcseconds (mas)
The milliarcsecond is used for star positions and parallaxes measured by space astrometry missions such as Gaia.
Convert milliarcseconds to any angle unit
1 milliarcsecond = 2.7777778 × 10-7 degrees
Quick facts
1 milliarcsecond in other units
| Degrees | 2.7777778 × 10-7 ° |
| Radians | 4.8481368 × 10-9 rad |
| Arcminutes | 0.000016666667 ′ |
| Arcseconds | 0.001 ″ |
| Gradians | 3.0864198 × 10-7 grad |
| Milliradians | 0.000004848137 mrad |
| Turns | 7.7160494 × 10-10 tr |
| NATO mils | 0.000004938272 mil |
What is a milliarcsecond?
The milliarcsecond is used for star positions and parallaxes measured by space astrometry missions such as Gaia.
Where the milliarcsecond sits among angle units
The milliarcsecond is number 2 of 24 on our scale of angle units, ordered from smallest to largest.
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Common amounts of milliarcseconds
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Frequently asked questions
What is a milliarcsecond?
The milliarcsecond is used for star positions and parallaxes measured by space astrometry missions such as Gaia.
How is the milliarcsecond defined?
1/1,000 of an arcsecond.
How many degrees are in a milliarcsecond?
One milliarcsecond equals 2.7777778e-7 degrees.
How many radians are in a milliarcsecond?
One milliarcsecond equals 4.8481368e-9 radians.
How many arcminutes are in a milliarcsecond?
One milliarcsecond equals 0.000016666667 arcminutes.