What is the difference between XLS and XLSX files?

Is it better to use XLS or XLSX?

For compatibility, XLS has higher compatibility than XLSX. XLS is readable by all Microsoft Excel versions while XLSX is only readable by Excel 2007 and later versions. besides, XLS is able to hold the spreadsheets either including Macros or not, while XLSX isn't capable to support Macros.

Can you convert XLS to XLSX?

Click on the Office button, then Convert. You can also try opening the . xls file in Excel > then use the Save As command to save as an "Excel Workbook". Once you select that file type, the file extension will be xlsx and you can delete the old xls version.

What is XLS and XLSX file?

The XLSX and XLS file extensions are used for Microsoft Excel spreadsheets, part of the Microsoft Office Suite of software. XLSX/XLS files are used to store and manage data such as numbers, formulas, text, and drawing shapes.