For the format I used (multiplying the logical expressions), I could have
left off the double unary signs...

=SUMPRODUCT((D$5:D$31-I$5:I$31<60)*(D$5:D$31<"")*(I$5:I$31<""))

They would only be needed if you used the comma delineated listing of the
logical expressions.

Rick


"Rick Rothstein (MVP - VB)" wrote in
message ...
How do I get this formula:
=SUMPRODUCT(--(D$5:D$31-I$5:I$31<60))

To ignore empty cells? It's currently tallying all the empty ones
contained in the ranges.

Something like this maybe...

=SUMPRODUCT(--(D$5:D$31-I$5:I$31<60)*(D$5:D$31<"")*(I$5:I$31<""))

where you include additional logical expressions to filter those
conditions.

Rick