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How do I convert start and end times to duration, days to number of days?

  1. #1
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    Question How do I convert start and end times to duration, days to number of days?

    Hello,
    Iím trying to calculate number of quarter hours in data that looks like this [brackets indicate separate cells].
    Days Start time End time
    [MTuWThF] [10:00PM] [2:00AM]

    So, in the example, the number of quarter hours is 5 days X 4 hours X 4 quarters = 80

    I have a wide variety of day combos Ė MTuW, MW, ThF, SaSu, MTWTh etc. Itís also important that Iím able to calculate # of hours for times that span from am to pm and pm to am.
    I think I can figure out counting the days to get that multiplier, but what about an easy way to count number of hours?

    And bonus would be handling Ĺ and ľ hour times Ė 2:45, 3:15 etc.

    Itís a process Iíll have to apply to a couple thousand lines of data several times a year, so the more turnkey, the better. Any help is most appreciated, thanks!
    Tom

  2. #2
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    Re: How do I convert start and end times to duration, days to number of days?

    Try:

    =COUNT(FIND({"M";"T";"W";"F";"S"},MID(A1,{1,2,3,4,5,6,7,8,9,10},1)))*(C1+(C1<B1)-B1)*24*4

    A1: Days
    B1: Start Time
    C1: End Time
    Regards,
    Haseeb Avarakkan

    __________________________________
    "Feedback is the breakfast of champions"

  3. #3
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    Re: How do I convert start and end times to duration, days to number of days?

    Hi constructionzone,

    If you're not restricted to having the Start and End Times in a single cell each, then perhaps the attached solution might help?

    121109 - Hours.xlsx

  4. #4
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    Re: How do I convert start and end times to duration, days to number of days?

    Thanks to you both, a modified version of the count formula is working pretty well. We have a weird situation where we're often converting times from clock times like 6:05 to a quarter hour 615p. If anyone knows of a way to have Excel understand the number of quarter hours with start and end times formatted like 2p, 615p, 3a, 11a etc. Let me know, otherwise, we're doing some things manually, but the formula above is saving a lot of time.

    Thanks!
    CZ

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