How many arcsecond in 1 full circle? The answer is 1296000. We assume you are converting between arcsecond and full circle. You can view more details on each measurement unit: arcsecond or full circle The SI derived unit for angle is the radian. 1 radian is equal to 206264.8062471 arcsecond, or 0.1591549430919 full circle. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between arcseconds and full circle. Type in your own numbers in the form to convert the units!
You can do the reverse unit conversion from full circle to arcsecond, or enter any two units below:
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.
The full circle or full turn or cycle or rotation or revolution uses k = 1/2pi, making the angle of 1 full circle = 2pi rad = 4 right angles = 400 gon = 360°.
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