**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 ns.

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.

ns to fortnight

ns to Julian month

ns to sidereal year

ns to quarter

ns to lunar year

ns to tropical month

ns to hour

ns to anomalistic year

ns to millisecond

ns to minute