How many nanoseconds are in one second?

Answer 1

Work it out by basic dimensional analysis!

One (average) year = 365.24 days

One day = 24 hours

One hour = 60 minutes

One minute = 60 seconds

so there are 365.24 * 24 * 60 * 60 seconds in a year.

One nanosecond is 10**9 seconds so multiply the above answer by 10**9 (or just shift the decimal point 9 places, it's loads easier)

BTW this same approach can be used to convert any comparable sets of units, e.g. miles per hour into metres per second, or even furlongs per fortnight if you really want to try.

Answer 2

By multiplication,

1 second = 1,000,000,000 nanoseconds (1 x 109 nanoseconds)

1 day = 86,400 seconds

1 year = 365.2422 days

so 1 year = 31,556,926,000,000,000 nanoseconds (3.1557 x 1016 nanoseconds)

(The Julian year consists of 31,557,600 seconds, based on 365.25 days.)

Answer 3

One second is equivalent to 1,000,000,000 nanoseconds.

That's one billion nanoseconds, 10E9, or 10**9 nanoseconds.

Answer 4

3.1556926 × 1016 31,556,926,000,000,000

Answer 5

There are 1 billion nanoseconds in one second.

Answer 6

1 Day = 86400000000000 Nanoseconds

Answer 7

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