Hi!

In column B of one of your sheets, I guess Jan is good one for it, enter
this formla and copy down:

=COUNTIF(Feb_Sheet1!A:A,A1)

Copy down as needed.

My definition of duplicates:

If you're counting duplicates ASA-2-145006 is only DUPLICATED once. The
first instance is considered the original and then all other instances would
be duplicates.

Biff

"Gayla" wrote in message
...
I have each months data seperated into multiple worksheets. Now I need to
identify any entry that is duplicated and how often it is duplicated. I
need
the result to be ASA-2-145006 (2), ASA-2-305001 (2), ASA-2-305002 (2). My
example data is below. Any help would be appreciated.

Example:
Jan Worksheet Feb Worksheet

Column A Column A
ASA-2-145006 ASA-2-145006
ASA-2-205003 ASA-2-205004
ASA-2-205004 ASA-2-305001
ASA-2-205005 ASA-2-305002
ASA-2-205006 ASA-2-305003
ASA-2-305001 ASA-7-245001
ASA-2-305002 ASA-7-245002