How many arcsecond in 1 radian?
The answer is 206264.8062471.
We assume you are converting between arcsecond and radian.
You can view more details on each measurement unit:
arcsecond or radian
The SI derived unit for angle is the radian.
1 arcsecond is equal to 4.8481368110954E-6 radian.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between arcseconds and radians.
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You can do the reverse unit conversion from radian to arcsecond, or enter any two units below:
arcsecond to point
arcsecond to revolution
arcsecond to mil
arcsecond to 1/10 circle
arcsecond to degree
arcsecond to 1/4 circle
arcsecond to percent
arcsecond to 1/8 circle
arcsecond to minute
arcsecond to grad
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.
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").
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