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.

If you manage data in multiple Excel spreadsheets, you can use the Consolidate Data wizard to merge data from several spreadsheets or workbooks into one master sheet.

How to Add Cells Across Multiple Spreadsheets. Adding data that spans multiple Excel spreadsheets might appear daunting at first, but Microsoft simplifies the task with two referencing methods.