**Full name:** nanosecond

**Plural form:** nanoseconds

**Symbol:** ns

**Alternate spelling:** nanosec

**Category type:** time

**Scale factor:** 1.0E-9

The SI base unit for time is the second.

1 second is equal to 1000000000 nanosecond.

Valid units must be of the **time** type.

You can use this form to select from known units:

The SI prefix "nano" represents a factor of
10^{-9}, or in exponential notation, 1E-9.

So 1 nanosecond = 10^{-9} arcseconds.

The definition of a second is as follows:

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.

nanosecond to Julian year

nanosecond to anomalistic month

nanosecond to millisecond

nanosecond to century

nanosecond to decade

nanosecond to week

nanosecond to tropical year

nanosecond to quarter

nanosecond to sidereal month