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Weeks in a month formula

  1. #1
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    Weeks in a month formula

    With the work week being Monday to Friday, I would like to know how to count the number of work weeks (5 days) in a month. The weeks that are not complete should return zero. week 0, 1, 2, 3, 4 etc.

  2. #2
    Forum Moderator Leith Ross's Avatar
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    San Francisco, Ca
    MS-Off Ver
    2000, 2003, & 2010
    Hello Tashia,

    Welcome to the Forum!

    This macro is a User Defined Function. It works the same as a worksheet formula after you install it. It requires only a valid date as an argument. It will return either a 3 or a 4 indicating the weeks (5 day weeks) in the month.
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    Adding the Macro
    1. Copy the macro above pressing the keys CTRL+C
    2. Open your workbook
    3. Press the keys ALT+F11 to open the Visual Basic Editor
    4. Press the keys ALT+I to activate the Insert menu
    5. Press M to insert a Standard Module
    6. Paste the code by pressing the keys CTRL+V
    7. Make any custom changes to the macro if needed at this time
    8. Save the Macro by pressing the keys CTRL+S
    9. Press the keys ALT+Q to exit the Editor, and return to Excel.

    Leith Ross

  3. #3
    Forum Moderator daddylonglegs's Avatar
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    MS-Off Ver
    Hello Leith,

    If I put the date 1-Feb-2010 in A1 (it's a Monday) I get a result of 3, shouldn't that be 4?

    This formula will give you a count for the whole month


    If you want the count to be from the start of the month to the referenced date, e.g. Thu 19-Jun-08 will give 2 but Fri 20-Jun-08 will give 3 try


  4. #4
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    Counting Partial & Full Weeks in a Month

    Thanks for the reply!
    I actually need help writing a formula that will give the following results:

    Work Week is Monday - Friday

    0 = the first partial week (for example the 1st of the month starts on a Tuesday)
    1 = the 1st full week
    2 = 2nd full week
    3 = 3rd full week
    4 = 4th full week
    5 = if the month ends on a partial week (for example the 31st lands on a Thursday)


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