You can use the =NETWORKDAYS(A3,A4) function. You must attach the Analysis
ToolPak add-in to use this function. Tools, Add-Ins.

This function assumes workdays are M-F. If you also need to exclude other
days (holidays) there is a 3rd arguments.
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Cheers,
Shane Devenshire
Microsoft Excel MVP

"Wanna Learn" wrote:

Hello How do I calculate the number of business days between 2 days,
example how many business days are there between 1-9-08 and 1-3-08 thanks