Works like a charm... thanks, a thousand thanks!

"bpeltzer" wrote:

You might try this:
=SUM(OFFSET($M$3,ROW()*3-9,0,3,1))
Replace $M$3 with the cell address of the first month's data. Replace the 9
with 3*the row number of that first month's data (my example was in row 3;
3*3=9). Autofill that formula down through three more rows.
HTH. --Bruce

"jetlag" wrote:

Does an easy way exist to convert a column of monthly data into a column of
quarterly data (average of months in the quarter)?
THANKS!