How many second in 1 ns?
The answer is 1.0E-9.

We assume you are converting between **second** and **nanosecond**.

You can view more details on each measurement unit:

second or
ns

The SI base unit for **time** is the second.

1 second is equal to 1000000000 ns.

Note that rounding errors may occur, so always check the results.

Use this page to learn how to convert between seconds and nanoseconds.

Type in your own numbers in the form to convert the units!

You may also want to find out how many days
are between two dates on the calendar. Use the
**date calculator**
to get your age in days or measure the duration of an event.

1 second to ns = 1000000000 ns

2 second to ns = 2000000000 ns

3 second to ns = 3000000000 ns

4 second to ns = 4000000000 ns

5 second to ns = 5000000000 ns

6 second to ns = 6000000000 ns

7 second to ns = 7000000000 ns

8 second to ns = 8000000000 ns

9 second to ns = 9000000000 ns

10 second to ns = 10000000000 ns

You can do the reverse unit conversion from ns to second, or enter any two units below:

second to microsecond

second to millennium

second to millisecond

second to week

second to shake

second to quarter

second to year

second to fortnight

second to minute

second to month

The second (symbol s) is a unit for time, and one of seven SI base units. It is defined as the duration of 9,192,631,770 periods of the radiation corresponding to the transition between the two hyperfine levels of the ground state of the caesium-133 atom at zero kelvins.

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.

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