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A nanosecond (ns) is an SI unit of time equal to one billionth of a second, that is, ​ of a second, or 10-9 seconds.

The term combines the prefix nano- with the basic unit for one-sixtieth of a minute.

A nanosecond is equal to 1000 picoseconds or ​ microsecond. Time units ranging between 10-8 and 10-7 seconds are typically expressed as tens or hundreds of nanoseconds.

Time units of this granularity are commonly found in telecommunications, pulsed lasers, and related aspects of electronics.

Common measurements

See also


  1. ^ By definition of the "foot" as exactly 1/3 yards, and of the international yard as "exactly 0.9144 metres", and of the metre (SI unit) defined by the International Bureau of Weights and Measures as the "length of the path traveled by light in vacuum during a time interval of 1/299792458 of a second". The time taken by light to travel 1 foot in a vacuum is therefore (1/299792458)x(0.9144/3) seconds, or 1.016703362164 nanoseconds.
  1. ^ "Official BIPM definition of the metre". BIPM. Archived from the original on 2003-10-29. Retrieved .
  2. ^ Beringer, J. "K±" (PDF).

  This article uses material from the Wikipedia page available here. It is released under the Creative Commons Attribution-Share-Alike License 3.0.



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