Convert _XLS to XLSX

How to convert _xls to xlsx. Possible _xls to xlsx converters.

How to convert _xls to xlsx file

Some email clients rename XLS files to _XLS for various reasons, but do not actually convert the data. Simply change the file extension back to XLS, open in Microsoft Excel and resave them in XLSX format using the File ► Save as.. function in the program. No _xls to xlsx conversion is actually required.

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Microsoft Excel

A popular spreadsheet application distributed with Microsoft Office suite

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Microsoft Excel for Mac

A popular spreadsheet application from the Microsoft Office suite

Additional formats for
_xls file conversion