Count rows in a dynamic range

Question

Consider a very simple example of a dynamic range:

Cell C10 (arbitrary cell):

=FILTER(Table1[List1],NOT(ISNUMBER(XMATCH(Table1[List1],Table1[List2]))))

I would like to now know how many rows are in the dynamic range starting at C10. I tried simply:

=ROWS(C10)

but it returns '1' even when there are more than one rows returned. Is this possible?

Answer 1

Use COUNTA and the spilled range operator # :

In C10 :

=FILTER(Table1[List1],NOT(ISNUMBER(XMATCH(Table1[List1],Table1[List2]))))

In D10 :

=COUNTA(C10#)

Or like your original approach, you can use ROWS with the spilled range operator:

=ROWS(C10#)