That depends on the resources (memory and free space on your hard disc)
you have in the PC you are using. A posting the other day referred to a
115Mb file being a bit slow !!

Hope this helps.

Pete

Mike wrote:
I am building a large workbook in Excel which has reached up to about 65 mb.
How large can an Excel 2003's file size be before it will begin experiencing
problems and/or crash?

thanks
Mike