That seemed to work just fine. Thank you very much for you help and time.
--
RyGuy


"Max" wrote:

.. Can I full-proof my calculation to ignore any empty cells it may find?

It's probably due to null strings/text returned/existing within OctEffort
(real blank cells pose no problem)

Try the array-entered SUM(IF(...)) alternative:
=SUM(IF(ISNUMBER(SEARCH({"QA","qual"},(OctEnvironm ent))),OctEffort))

Above tested lightly, works fine
--
Max
Singapore
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---
"BLUV" wrote:
I have the following calculation working for me where OctEffort = I2:I3324
and OctEnvironment = G2:G3324.

=SUMPRODUCT(ISNUMBER(SEARCH({"QA","qual"},(OctEnvi ronment)))*OctEffort)

This approach requires me to be mindful of empty cells and ensure the I and
G columns do not interrogate cells beyond row 3324. If I set OctEffort and
OctEnvironment to be I2:I5000 and G2:G5000 respectively, then my calculation
fails because of blank/empty cells. Can I full-proof my calculation to
ignore any empty cells it may find?