How does one sum only those rows in excel not filtered out?

Question

I use the SUM(B1..B20) formula to sum a column, but when I filter the data by an adjacent column, the sum doesn\'t update to reflect only those rows not filtered ou

Answer 1

If you aren't using an auto-filter (i.e. you have manually hidden rows), you will need to use the AGGREGATE function instead of SUBTOTAL.