To be honest, I don't know the logic behind that particular formula, I just
know that it works. I know the "mechanics", but explaining the mechanics
won't help in understanding the logic (or, "why it works"). I'm not sure of
the original author, maybe Daniel Maher.

Because I don't know the logic of that formula, I prefer the other formula
because I do know the logic behind it.

Biff

"kjc" wrote in message
...
Hello - I do not have the Analysis ToolPak but I did use your suggestion
below (=SUM(INT etc. and it seems to have worked. Could you provide me
with
what this formula is stating so I can better understand?

Many thanks!

"T. Valko" wrote:

If you have the Analysis ToolPak add-in installed:

A1 = start date
B1 = end date

=NETWORKDAYS(A1,B1)-1

If you don't have the ATP installed, try one of these:

=SUM(INT((WEEKDAY(A1-{1,2,3,4,5},2)+B1-A1)/7))-1

=SUMPRODUCT(--(WEEKDAY(ROW(INDIRECT(A1&":"&B1)),2)<6))-1

Biff

"kjc" wrote in message
...
How do I enter a formula that subtracts 2 dates and returns a number
(days)
that does not include weekends?