›› Measurement unit: arcsecond

Full name: arcsecond

Plural form: arcseconds

Symbol: sec

Category type: angle

Scale factor: 4.8481368110954E-6


›› SI unit: radian

The SI derived unit for angle is the radian.
1 radian is equal to 206264.8062471 arcsecond.


›› Convert arcsecond to another unit

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›› Definition: Second

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.


›› Sample conversions: arcsecond

arcsecond to percent
arcsecond to radian
arcsecond to 1/2 circle
arcsecond to degree
arcsecond to grad
arcsecond to 1/8 circle
arcsecond to 1/16 circle
arcsecond to revolution
arcsecond to arcminute