Function to count unique items in list

[XP]

I am using Office 2003 on Windows XP.

Is there a built-in function in MS-Excel that gives you a count of the
unique items in a list?

If so, what is it called?

If not, how can I create a user defined function to do this?

Thanks much in advance.

[Ron Coderre]

Try this:

For a list in A1:A10

=SUMPRODUCT((A1:A10<>"")/COUNTIF(A1:A10,A1:A10&""))

Adjust range references to suit your situation.

Does that help?

***********
Regards,
Ron

XL2002, WinXP-Pro


"XP" wrote:

> I am using Office 2003 on Windows XP.
>
> Is there a built-in function in MS-Excel that gives you a count of the
> unique items in a list?
>
> If so, what is it called?
>
> If not, how can I create a user defined function to do this?
>
> Thanks much in advance.

[Bob Umlas]

ctrl/shift/enter:
=SUM(1/COUNTIF(A1:A100,A1:A100))
Bob Umlas

"XP" <[email protected]> wrote in message
news:[email protected]...
> I am using Office 2003 on Windows XP.
>
> Is there a built-in function in MS-Excel that gives you a count of the
> unique items in a list?
>
> If so, what is it called?
>
> If not, how can I create a user defined function to do this?
>
> Thanks much in advance.