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calulating time

  1. #1
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    calulating time

    i am creating a spreadsheet to use as a time card, and also check the math at the same time. the trouble I am having is that I cannot get excel to recognize time under 30 minutes. below are some screen shots including the formulas, columns f-I and k-q are formatted in h:mm, any ideas?

    1.JPG2.JPG3.JPG

  2. #2
    Forum Expert bebo021999's Avatar
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    Re: calulating time

    In excel, 1 minute equals 1/(24*60)
    8 hour and 5 minutes = (8*60+5)/(24*60) = 0.336805555555556
    8 hour and 0 minue = (8*60)/(24*60) = 0.33333333333333300
    8:05 - 8: 00 = 0:05 = 0.00347222222222227
    But 0:05 = 12:05:00 = 0.00347222222222222
    To compare them, must rounding them in J6 formula:

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    Quang PT

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