The separate tabs is not the issue, but the data may be. Try this

=SUMPRODUCT(--('Aug 2008 Term Data'!R3:R180=S4),
--('Aug 2008 Term Data'!Q3:Q180=T1))

What does the data consist of?


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__________________________________
HTH

Bob

"taurus99" wrote in message
...
I have my data on one tab and my formula on a separate tab.

How do I use sumproduct when my info is on another tab. This is the
formula
I am using and it's not working. All the data is text.

=SUMPRODUCT(('Aug 2008 Term Data'!R3:R180=S4)*('Aug 2008 Term
Data'!Q3:Q180=T1))

P.S. - I would also like it not to count blanks ...