WEEKNUM UDF for Excel Versions That Don't Contain This Function - UDF

Add to Favorites
This is a WEEKNUM UDF for Excel. This allows you to determine the number of the week in the year on which a particular date falls. This UDF allows you to use the WEEKNUM function (standard in Excel 2007) in previous versions of Excel and across different regional versions or languages of Excel.

This function is exactly the same as the WEEKNUM() function in Excel 2007 and contains the same arguments in the same order.

Where to install the macro:  Module

WEEKNUM UDF for Excel Versions That Don't Contain This Function

Function WEEKNUMUDF(D As Date, FWDayArg As Integer) As Integer

WEEKNUMUDF = CInt(Format(D, "ww", FWDayArg))

End Function










How to Install the Macro
  1. Select and copy the text from within the grey box above.

  2. Open the Microsoft Excel file in which you would like the Macro to function.

  3. Press "Alt + F11" - This will open the Visual Basic Editor - Works for all Excel Versions.  Or For other ways to get there, Click Here.

  4. On the new window that opens up, go to the left side where the vertical pane is located. Locate your Excel file; it will be called VBAProject (YOUR FILE'S NAME HERE) and click this.

  5. If the Macro goes in a Module, Click Here, otherwise continue to Step 8.

  6. If the Macro goes in the Workbook or ThisWorkbook, Click Here, otherwise continue to Step 8.

  7. If the Macro goes in the Worksheet Code, Click Here, otherwise continue to Step 8.

  8. Close the Microsoft Visual Basic Editor window and save the Excel file. When you close the Visual Basic Editor window, the regular Excel window will not close.

  9. You are now ready to run the macro.


Excel Forum