| Convert from full circle to second |
Unit Definition (full circle) The full circle is the traditional unit of angle measure, divided into 2 pi radians or 360 degrees. Unit Definition (second) The second is a unit of angular measure equal to 1/60 arcminute. This unit is also called the arcsecond to distinguish it from the second of time. One second is a very small angle indeed: there are 1 296 000 seconds in a circle. The SI defines s as the symbol for the time unit and recommends " as the symbol for the arcsecond. The international standard ISO 31 recommends that angles be stated in degrees and decimal fractions of the degree, without use of arcminutes and arcseconds.
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