Returns the column number of the given reference.
Syntax
COLUMN(reference)
Reference is the cell or range of cells for which you want the column number.
Examples
COLUMN(A3) equals 1
When entered as an array in any three horizontally contiguous cells:
COLUMN(A3:C5) equals {1,2,3}
If COLUMN is entered in C5, then:
COLUMN() equals COLUMN(C5) equals 3