A nanosecond (ns)'s one billionth of a second. See also times of other orders of magnitude. To help compare orders of magnitude of different times this page lists times between 10−9 seconds and 10−8 seconds (1 nanosecond and 10 nanoseconds). shorter times 1.0 nanoseconds (1.0 ns) – cycle time for frequency 1 GHz, radio wavelength 0.3 m 1.02 nanoseconds (approximately) – time taken for light to travel 1 foot. 1.286 nanoseconds – a seventh (a 60th of a 60th of a… (More on Nanosecond)