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 ...

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

Adding a condition to a simple revenue sheet might spell trouble in Microsoft Excel, but don't worry--a simple conditional function can handle the request.

This instructs Excel that there are headers and to show them. See the formula and grouping on the next page that now contain headers. Let’s group the transactions the same as we did in the example ...