Hello

I would like to learn how to calculate amonts in a sumif that are between 2
dates.

eg =SUMIF('Costs detail'!$Q$2:$Q518,A8,'Costs detail'!$O$2:$O$542)
......where A8 is currently just a month reference (I mean it looks at cell A8
where I type in the month). So in other words, I'd like it to look up values
in another worksheet called Costs Detail, providing the associated dates are
between, say 1st Feb and end of April. Any help always please.