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# Subtracting two time columns to create hours

Posted on 2011-09-06
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Using Excel 2007 I need to subtract two columns, each containing the time (military). I need the result to be hours (as a double).

What are the formulas and formatting I need to use?

Thanks.
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Question by:newbieweb

LVL 7

Accepted Solution

redbmaster earned 500 total points
ID: 36490293
Ok, the formula to convert a time to an integer is (A1-INT(A1))*24. So the forumula should look something like =SUM(((A2-INT(A2))*24)-((A1-INT(A1))*24)).

To format a cell, just right click it and select "Format Cell".
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Author Closing Comment

ID: 36490511
Thanks!
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