Changing YYYYMMDD to MM/DD/YYYY

Question

So I have a date that is 20170529 but whenever I try to format it to a date, the cell just becomes #########. So normally, that means the column width is too small, but even

Answer 1

Select the cells you wish to fix and run this short macro:

Sub INeedADate()
    Dim r As Range
    For Each r In Selection
        v = r.Text
        If Len(v) = 8 Then
            r.Clear
            r.NumberFormat = "mm/dd/yyyy"
            r.Value = DateSerial(Left(v, 4), Mid(v, 5, 2), Right(v, 2))
        End If
    Next r
End Sub