How many radian in 1 arcsecond?
The answer is 4.8481368110954E-6.
We assume you are converting between radian and arcsecond.
You can view more details on each measurement unit:
radian or
arcsecond
The SI derived unit for angle is the radian.
1 radian is equal to 206264.8062471 arcsecond.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between radians and arcseconds.
Type in your own numbers in the form to convert the units!
1 radian to arcsecond = 206264.80625 arcsecond
2 radian to arcsecond = 412529.61249 arcsecond
3 radian to arcsecond = 618794.41874 arcsecond
4 radian to arcsecond = 825059.22499 arcsecond
5 radian to arcsecond = 1031324.03124 arcsecond
6 radian to arcsecond = 1237588.83748 arcsecond
7 radian to arcsecond = 1443853.64373 arcsecond
8 radian to arcsecond = 1650118.44998 arcsecond
9 radian to arcsecond = 1856383.25622 arcsecond
10 radian to arcsecond = 2062648.06247 arcsecond
You can do the reverse unit conversion from arcsecond to radian, or enter any two units below:
In mathematics and physics, the radian is a unit of angle measure. It is the SI derived unit of angle. It is defined as the angle subtended at the center of a circle by an arc of circumference equal in length to the radius of the circle. Angle measures in radians are often given without any explicit unit. When a unit is given, sometimes the abbreviation rad is used, sometimes the symbol c (for "circular").
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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