Almost every month, I suggest the Subtotal feature to a reader. It's an easy-to-use feature that summarizes data by groups. You define the group and the summarizing function; Excel does the rest ...

Learn how to use Excel's Subtotal feature to quickly add summarizing rows to your data.

Excel's Subtotal feature can render quick results when you need simple grouping calculations. Susan Harkins shows you how this powerful feature works.

There are several reasons to use SUBTOTAL instead of SUM when inserting subtotals in your spreadsheet.