How many seconds in 1 nanosecond?
The answer is 1.0E-9.

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

You can view more details on each measurement unit:

seconds or
nanosecond

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

1 second is equal to 1000000000 nanosecond.

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

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

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1 seconds to nanosecond = 1000000000 nanosecond

2 seconds to nanosecond = 2000000000 nanosecond

3 seconds to nanosecond = 3000000000 nanosecond

4 seconds to nanosecond = 4000000000 nanosecond

5 seconds to nanosecond = 5000000000 nanosecond

6 seconds to nanosecond = 6000000000 nanosecond

7 seconds to nanosecond = 7000000000 nanosecond

8 seconds to nanosecond = 8000000000 nanosecond

9 seconds to nanosecond = 9000000000 nanosecond

10 seconds to nanosecond = 10000000000 nanosecond

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

seconds to decade

seconds to millisecond

seconds to year

seconds to quarter

seconds to day

seconds to microsecond

seconds to minute

seconds to millennium

seconds to century

seconds 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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