Subtract Two Dates By The Number of Days, But Only Inlcude Work Days

I've got the following formula which will give me the exact number of days between two dates, is there anyway to only count "work days"?


=DATEDIF([@[Date Assigned]],[@[Review Closed]],"d")

The column titled "Date Assigned" is C$2:C$65 and the column titled "Review Closed" is G$2:G$65


Thanks in advance!

Try the NETWORKDAYS function.