XLS is the default file type for Microsoft Office Excel files. It is compatible with nearly all programs that read spreadsheet files. If you are looking to manage your spreadsheets while you're on the ...

XLS files are Excel workbook files created in Excel 97 or Excel 2003. The 2007, 2010 and 2013 versions of the program use the XLSX format by default to save workbooks, but can also use the XLS format.

Upgrade from standard Excel workbooks to specialized formats that shrink, shield, and streamline your spreadsheets.

This month's monster security patch for Office breaks Excel when it tries to open HTML files, and it seems unlikely Microsoft will fix the problem Excel users are reporting an odd bug in the way Excel ...

If you use Microsoft Excel on your Mac, you can save the spreadsheets you create and open them in Numbers, Apple’s spreadsheet app. It’s a handy feature to use in case you can’t access Microsoft’s ...