Calculating data within a date range

[Guest]

Does anyone have any ideas on how to calculate data that is listed by date
(not necessarily in date order. I am trying to come up with a week ending
subtotal in a summary sheet from a number of different worksheets. My data
is listed as shown in each worksheet. If anyone could offer a formula to
put in my summary sheet it would be greatly appreciated.

Column b Column I
Date Net weight in tonnes
3/09/2007 37.5

 

[Guest]

Hi,

Dates in Column A and what to sum in column B.
This sums data between 2 dates in C1 & C2. Adapt the ranges to suit:-

=SUMPRODUCT((A1:A4>C1)*(B1:B4))-SUMPRODUCT((A1:A4>C2)*(B1:B4))

 

[Guest]

Mike,

Thanks for the help the formula worked but gave me a huge negative number,
which was unexpected do I need to have 2 date columns in my worksheet. I
took the dates for C1 and C2 from the column headings in my summary sheet.
Thanks again

 

[Guest]

As long as C1, C2 and column A are correctly formatted dates then it should
work.

Mike

 

[Guest]

Mike,

Thanks got it to work, but have another question. I have tried to copy this
and paste formula for each consecutive week ending but am getting VALUE
appear. Any ideas.

Thanks