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'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.

Ref2, which is optional, is for any additional ranges of cells. You can have up to 252 ranges. [k], which is optional, is used with function_nums like LARGE, SMALL, PERCENTILE, and others that require ...

The purpose of Excel SUMSQ function is to return the sum of the square of the arguments. We explain the syntax, formula & how to use it.

Google Sheets offers many of the same features as Microsoft Excel. The SUMIF function allows you to quickly sum rows that meet certain criteria.

Excel’s BYCOL() and BYROW() functions evaluate data across columns and rows, returning an array result set allowing you to bypass a lot of work.