Thanks Frank that function appears to work for me.

"Frank Kabel" wrote:

Hi
maybe something like
=SUMIF(A1:A1000,"=" & TODAY()-90,B1:B1000)

--
Regards
Frank Kabel
Frankfurt, Germany


TylerMaricich wrote:
I'm a pilot trying to use excel 2002 to calculate my logbook, and
need to know how much of the time was in the last 90 days, I'm
looking for a formula that will help me sort, and add the data from
just the last 90 days.