James,

=(YEAR(A2)-YEAR(A1))*360 +(MONTH(A2)-MONTH(A1))*30 + DAY(A2)-DAY(A1)

HTH,
Bernie
MS Excel MVP


"James Dasher" <James wrote in message
...
I want to be able to calculate the days between two "dates" however I need
it
on a 30 day system. It doesn't run on a true calendar, but always on 30
days.
So essentially between two 1-30 sets I need the amount. I want to include
the
first number.

So if I put down in the first cell "23" and the second cell say "8" I need
the total to be 16

Any suggestions?