Hello, I have a slight problem. I have a colum that lists when a certain piece of work came in so column d = confirmation date. Colum e is confirmation age and shows how long the piece of work has been on our books. What I want to work out is how I work out this with working days, as at the moment if the work came in on the 1st November it would show in column e 16 days. But really it should be 10 days as it has been 10 working days, can someone help!