Thats great, how could i also add the criteria so i could see the cumulative
total at week eg18 or less, from col D, which looks as follows:

D
Week No.
16
17
18
18
19
20

I've tried the following, but it doesn't seem to work?

=SUMPRODUCT(--(A1:A10="Production"),--(B1:B10="External"),--(D1:D10=20),C1:C10)

Thanks

"Biff" wrote:

Hi!

Try this:

=SUMPRODUCT(--(A1:A10="Production"),--(B1:B10="External"),C1:C10)

Note that Sumproduct will not accept entire columns as range arguments, A:A,
B:B. C:C

Biff

"luvthavodka" wrote in message
...
I have the following table, and would like to sum the value of C with the
criteria A=Production, and B=External. I have so far
SUMIF(A:A,"Production",C:C)...but can't work out how to add AND B:B,"
External". In this case the return for my request will be C1 + C5

A B C
Production External £28,240
Design External £71,908
Production InterGroup £159,070
Design External £3,600
Production External £327,700

Thanks for any help offered!