Using conditional formatting, try a formula of

=COUNTIF(A:A,A1)1

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HTH

Bob Phillips

(remove nothere from email address if mailing direct)

"excelstart" wrote
in message ...

Hi,

I am compiling a list with 3 columns and unlimited rows.

I need to avoid duplicate content by highlighting a cell in red if the
cell content is contained in any of the cells in its respective
column.

I have been trying with the if statement doing something like:

if:Ax=A1:Ax-1

I am not sure if the above synthax is correct, and how to highlight the
cell in red if the condition is true. Cell contents can be both numbers
and letters (spaces are allowed).

Can you help?

JP


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excelstart
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