Sumproduct for month

tlindeman

Active Member
Joined
Jun 29, 2005
Messages
313
Good Morning,
I have Excel 2010, Here is my issue. In column A I have week ending dates from Jan 11 through June 2012, In column B, I have sales by week from Jan 2011 through June 2012. I built a month formula in Column C (month(A1), In column D, I have a calculation for when a week end splits a monht, i.e. if the week ends on Jan 4th, part of the week is December, part Jan. What I would like to do is something to this effect:

sumproduct(B1:B500,D1:D500) when Column C=1, For jan, then sumproduct(B1:B500,D1:D500) when Column C=2 for feb.

Thank you
Tony
 

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barry houdini

MrExcel MVP
Joined
Mar 23, 2005
Messages
20,825
Try using SUMPRODUCT like this for January

=SUMPRODUCT(C1:C500=1)+0,B1:B500,D1:D500)
 

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