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Problem with SUM Function with Military Time

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    Problem with SUM Function with Military Time

    I have a column of trip times that were calculated utilizing military time and the custom format of [h]:mm. Doing this results in trip times that calculate out perfectly. What I am not able to do, is total these trip times! How should my function read, and what formatting do I need to sum these trip time totals?

    Ie. Trip Times Totals in Column:
    6:00 (6 hours)
    4:15 (4 hours, 15 minutes)
    2:30 (2 hours, 30 minutes)

    Should = 12 hours 45 minutes... instead, the total still reads 0

    What am I doing wrong?

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    Re: Problem with SUM Function with Military Time

    =sum(a1:a3), after making sure that the values in A1:a3 are numbers, not text.
    Entia non sunt multiplicanda sine necessitate

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    Re: Problem with SUM Function with Military Time

    You would think this would be the formula... but the total is 0 with this formula. Is this because my custom format is [h]:mm? I used this formatting option to make the trip times calculate properly.

    Screen Shot.JPG

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    Re: Problem with SUM Function with Military Time

    It has nothing to do with the format; the summands must be numbers, not text. What does =isumber(oneofthosecells) return?

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    Re: Problem with SUM Function with Military Time

    The sum works, but the time calculation does not show in the cell... Screen Shot - .JPG

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    Re: Problem with SUM Function with Military Time

    Resolved it...

    Formula for calculating trip time: =MOD((A2-A1),1) <--- formula for time over 24 hour period with cell formatted as: [h]:mm

    Once I made this change, trip calculation and column sum are calculating correctly. Thank you for your help.

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