If I enter a week number in a cell I want to have a formula that returns
the end date for that date (based on ISO week
numbers)
GK
You can do that with a UDF.
To enter this UDF, <alt-F11> opens the VB Editor.
Ensure your project is highlighted in the project explorer window, then
Insert/Module and paste the code below into the window that opens.
Use this by entering the formula =ISOWeeknum(dt) where dt is either a date or a
cell reference containing a date.
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Function ISOWeeknum(dt As Date) As Integer
ISOWeeknum = DatePart("ww", dt, vbMonday, vbFirstFourDays)
If ISOWeeknum > 52 Then
If DatePart("ww", dt + 7, vbMonday, vbFirstFourDays) = 2 Then
ISOWeeknum = 1
End If
End If
End Function
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--ron
