Sure, in C2, put something like:
=if(isblank(b2),"",b2-a2)
Copy it down.
Make sure C is formatted as numbers and not dates.
************
Anne Troy
www.OfficeArticles.com
"Daniel" <none@none> wrote in message
news:%(E-Mail Removed)...
> Hi,
>
> I am using Excel 2002.
> In column A I have a list of dates I purchased an item.
> In column B I have the date it was sold.
>
> How can I automatically calculate, in C, the number of days held?
>
> I case it matters, the date format is dd/mm/yyyy
>
> thanks
>
> Daniel
>