›› Convert arcsecond to radian


›› More information from the unit converter

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.
Type in your own numbers in the form to convert the units!

›› Want other units?

You can do the reverse unit conversion from radian to arcsecond, or enter any two units below:

Enter two units to convert


›› Common angle conversions

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

›› 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 7.710-7) of a circle. It is the angular diameter of an object of 1 unit diameter at a distance of 3606060/(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.

›› Definition: Radian

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").

›› Metric conversions and more

ConvertUnits.com provides an online conversion calculator for all types of measurement units. You can find metric conversion tables for SI units, as well as English units, currency, and other data. Type in unit symbols, abbreviations, or full names for units of length, area, mass, pressure, and other types. Examples include mm, inch, 100 kg, US fluid ounce, 6'3", 10 stone 4, cubic cm, metres squared, grams, moles, feet per second, and many more!