=SUMPRODUCT(--(MONTH(B1:B100)=1),C1:C100)
best wishes

--
Bernard V Liengme
Microsoft Excel MVP
http://people.stfx.ca/bliengme
remove caps from email

"Ireland" wrote in message
...
Hi,

I have a question sort of similar.

I am trying to imput a formula that will sum colum c if colum B is in a
certain date range. i.e. if dates are in january sum colum c ete.

Can someone help

Ireland

"Roger Govier" wrote:

Sorry Michelle

Typo, ran amok with typing A1 last time!!!
=IF(B1=C1,SUMPRODUCT(--($A$1:$A1=B1),$A$1:$A1),0)

--
Regards

Roger Govier


"michelle" wrote in message
...
That created a circular reference. Thanks for trying though.

"Roger Govier" wrote:

Hi Michelle

Try
=IF(B1=C1,SUMPRODUCT(--($A$1:$A1=B1),$A$1:$A1A1),0)
change the range to suit

--
Regards

Roger Govier


"michelle" wrote in message
...
a b c d
1 .2 yes yes .3
2 .5 no no .5
3 .1 yes maybe 0

So, as in the above example, I need to put a formula in D1 so that
it
will
take the sum of column a if column b = c1. I hope this makes
sense.
And
keep in mind I will be continually adding rows to this and will
need
it to
cover the entire row, not just part of a row.

Thank you in advance and let me know if you need more
clarification.