I usually set up my annual budget in one Excel workbook, and then I add 12 more sheets—one for each month of the year—so I can easily track the monthly data. Each sheet contains the same rows, columns ...

If you’ve got a whopper of a spreadsheet, with thousands or more of rows, you’ve got a big problem if you want to make sure the spreadsheet doesn’t contain duplicate entries. Excel simply doesn’t have ...

Microsoft Excel 2010 provides a formula for calculating the average value from multiple worksheets in a workbook. Before you apply this formula, check that each worksheet is formatted the same way.