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. This ...

Later, we'll add an IF() function that returns a subtotal for each day. How to calculate conditional subtotals in an Excel revenue sheet Your email has been sent Subtotals are common in a lot of Excel ...

How to subtotal transactions by conditional date components in Excel Your email has been sent Image: utah778, Getty Images/iStockphoto Must-read Windows coverage CrowdStrike Outage Disrupts Microsoft ...