=COUNTIF('Sheet1'!AH16:AH97, "<"&Date(2005,08,15))

This just counts the instances. SUMIF can add up associated values in
another column, such as AI16:AI97.

--

HTH

RP
(remove nothere from the email address if mailing direct)


"Kay" wrote in message
...
I have a column populated with dates. I want a cell in another worksheet
to
count how many of the dates in the aforementioned column are less than a
user
defined date. I.e. I want the cell to display how many dates fall before
15th
August. I am unsure as to how to write this correctly. Currently I have:

=COUNTIF('Sheet1'!AH16:AH97, "<15/08/2005")

Is this correct?

What would SUMIF do in contrast?