I need to sum a total of column of figures dependent on a entered date. Example is
Col.A (range)= list of dates (everyday for a year)
Col.B = (sum_range) List of values to be counted
Criteria is a date in a static cell.
What I need is to sum the values as long as the date is less than or equal to the criteria date.
My feeble attempt was =sumif(A:A,"<=c1",B:B) but of course this does not work; the sumif function doesn't seem to be able to determine if the cell value of C1 is <=, the result is always zero.
Col.A (range)= list of dates (everyday for a year)
Col.B = (sum_range) List of values to be counted
Criteria is a date in a static cell.
What I need is to sum the values as long as the date is less than or equal to the criteria date.
My feeble attempt was =sumif(A:A,"<=c1",B:B) but of course this does not work; the sumif function doesn't seem to be able to determine if the cell value of C1 is <=, the result is always zero.