Define variable range input for SUM() function

[JeffC]

Hi,
I need to be able to sum a range that will vary in size depending upon the
month. For instance, if the month is march, then I would like the SUM
function to pick-up the values in the Jan, Feb, and March columns. However,
if the month is June, I need it to sum the values for all 6 months, etc. So,
if the month is March, the formula would look like =SUM(B2:B4), but June
should look like =SUM(B2:B7). Is there any way to make the range "grow"
(i.e., from B4 to B7) automatically? I'd like to have either text or a
number representing the month in a cell that I could change which would
control the range covered by the SUM() formula. Thanks in advance.

 

[JeffC]

I'm still working through this... but why doesn't the following formula work?
=SUM(INDIRECT(INDEX(F6:I7,1,1):INDEX(F6:I7,1,F4)))... where F4 equals an
integer representing a month/column in the range?

 

[T. Valko]

Try it like this:

=SUM(F6:INDEX(F6:I6,F4))

If F4 is an empty cell the entire range will be calculated.

 

[JeffC]

Thanks! That did it!

Try it like this:

=SUM(F6:INDEX(F6:I6,F4))

If F4 is an empty cell the entire range will be calculated.

 

[T. Valko]

You're welcome. Thanks for the feedback!