Subtract Hours

  • Thread starter Thread starter Guest
  • Start date Start date
G

Guest

I have a list of times and I need to subtract 5 hours from each time. Some
are AM and some are PM. What is the best function to use?
 
One way:

=A1-TIME(5,0,0)

Alternatively, since times in XL are stored as fractional days, you
could use

=A1 - 5/24

which is just a bit more efficient than using the TIME() function.
 
I tried the first example you gave =A1-TIME(5,0,0) - however my result is
########## that no matter how wide I make the column it keeps doing that. I
got the same result with your second suggestion. Do I need to select a
different time format?
 
That is because A1 probably starts at less than 5 hours, and Excel doesn't
like negative time.

What would you like to happen if A1 is less than 5am to start with?
 
Sorry - If you're using the WinXL default 1900 date system, that
indicates that the result is negative, and that date system can't
display negative times.

Instead, use

=MOD(A1-TIME(5,0,0),1)
 
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