reference last non-blank cell in column code example
Example: excel formula for last non-empty cell in a column
'Excel formulas.
'Last filled cell in column A, confirm with Ctrl-Shift-Enter:
=INDEX(A:A,MAX((A:A>"")*(ROW(A:A))))
'Row number of last filled cell in column A, confirm with just Enter:
=INDEX(MAX((A:A>"")*(ROW(A:A))),1)