How do you convert 14 billion years into seconds? - Answers

First assume that an average leap year is 365.25 days. This allows for every fourth year being a leap year. Strictly speaking that is not true because every centenary is not a leap year but then every 4-centenary is, etc. Besides, it is not clear what meaning could be attached to a "year" for much of the 14 billion years since the the sun is nowhere near that old and the earth existed for less than a quarter of the time. Anyway, assuming 1 year = 365.25 days, 1 day = 24 hours 1 hour = 60 minutes 1 minute = 60 seconds you get 14 billion years = 4.42*1017 or 442 quadrillion seconds.