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 ...

Excel's Subtotal command allows you to quickly create subtotals in your sorted data, and then collapse the view to to show only the new subtotal rows.

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.

Other benefits to using SUBTOTAL are that you can opt to ignore any numbers that have been hidden, dynamically summarize data, and sum filtered values. And one of the most useful reasons is that you ...