excel - Converting Unix time stamp to dd/mm/yyyy hh:mm:ss

Question

I have a column that holds Unix timestamps at C1, and I am looking for the formula to create a new column that converts the timestamp to dd/mm/yyyy hh:mm:ss.

Here is a sample of the timestamp:

1409502202

Answer 1

You are going to have to provide some conversion from the UNIX (aka POSIX) timestamp to an Excel Date format. Typically this is performed by dividing the timestamp by 86,400 (number of seconds in a day) and adding 25,569 (number of days from 01-Jan-1900 to 01-Jan-1970). With a raw value that is in synch with the Excel date/time numerical system, the TEXT function can create the date/time.

=text(c1/86400 + 25569, "dd/mm/yyyy hh:mm:ss")  'yields 31/08/2014 16:23:22