# Use EXCEL to calculate time differences

Hopefully someone has done this.  I am looking for the formula to calculate the difference between one date time and another. Converting to days, hours and minutes.  I can do it in VB but need to be able to do it in EXCEL.  Any suggestions?
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Commented:
I came across this formula that might work for you:

Assume your date/times are formatted like: 08/25/2004  18:25:00

(Note: it's one long formula, it just doesn't fit on one line here...)

=CONCATENATE(ROUND(ROUND(((B1-A1)*1440),0)/1440,0)," Days ",TRUNC(MOD(ROUND((B1-A1)*1440,0),1440)/60)," Hours
",ROUND(MOD(ROUND((B1-A1)*1440,0),60),0), " Minutes")
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Commented:
Assuming A1 and A2 have dates in them, and A1 > A2

A3 has "=A1-A2

Now apply custom format like this to A3

"days" dd "hours" hh "minutes" mm "seconds" ss
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Commented:
you could do a macro using VBA in excel to do what you want to achieve, I think that would make things easier for you because then you could work it out exactly how you want to.
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Commented:
I also found this website, I hope it helps !

http://www.mathtools.net/Excel/Time_and_Date/
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Commented:
you have to register with that website I just posted, just so you know. The URL for the function to work out the time , date diff is below. I think that was done in VBA.

http://www.barasch.com/excel/daymoyear.htm
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Author Commented:
Thanks for the quick response.  Looks like this will work great.
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