The SUM formula can be applied to a certain number or cells or an indefinite series such as an entire column of data, which may grow or shrink at a later time.

How to Sum Across Worksheets in Microsoft Excel. Using multiple sheets in the same Excel workbook helps organize data into distinct categories. For example, you might have sales data for each of ...

You can sum cells across multiple sheets in Excel. This article presents steps for Adding single-cell values or Adding values in the range of cells.

You can sum a series of numbers in Microsoft Excel manually by typing in a simple formula, or automatically with a tool.

Hi everybody: I need to summarize phone calls in Excel to prove how many hours, mins and seconds I spent on the phone for something. I'm a very basic Excel user, so please spell it out for me. DAT ...

SERIESSUM function returns the sum of a power series based on the formula. Learn how to use the SERIESSUM function in Excel.

You can't use a SUM() function to sum a filtered list, unless you intend to evaluate hidden and unhidden values. Here's how to sum only the values that meet your filter's criteria.

I know Excel has a time-function application, so I figured it would not only track the hours but even give me end-of-week totals. But try as I might, I can’t get Excel to tote up each day’s hours.

Excel's COUNTIF and SUM functions streamline data analysis, enhancing productivity for users.