._XLS File Extension

._XLS File Extension

Renamed Microsoft Excel Spreadsheet (Legacy)

Developer N/A
Popularity
3.4  |  8 Votes
Category Spreadsheet Files
Format Binary

What is a _XLS file?

An _XLS file is a Microsoft Excel spreadsheet that has had its extension changed from .XLS to ._xls. A user or program may have changed the file's extension on purpose or by accident. _XLS files can be opened in Microsoft Excel and other spreadsheet programs after you rename them to use the .xls extension.

More Information

_XLS files are almost always renamed XLS files. Most commonly, email programs such as Windows Live Mail mistakenly produce _XLS files. This happens when a user attaches a spreadsheet whose filename ends in . to an email.

For example, if you attach a spreadsheet named spreadsheet..xls to an email, Windows Live Mail will rename that file to spreadsheet._xls. This issue also occurs when users attach .DOC, .DOCX, and .XLSX files to emails.

While XLS, and thus _XLS, files are typically created by Microsoft Excel, they can also be created using other spreadsheet programs, such as OpenOffice Calc or Apple Numbers. After renaming your _XLS file to use the .xls extension, you should be able to open the file in any of those programs.

How to open a _XLS file

After renaming your _XLS file to use the .xls extension, you can open it in any program that opens XLS files. These include:

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Programs that open _XLS files

Windows
Must be renamed to .xls then opened as an XLS file
Mac
Must be renamed to .xls then opened as an XLS file
Linux
Must be renamed to .xls then opened as an XLS file
Web
Must be renamed to .xls then opened as an XLS file
iOS
Must be renamed to .xls then opened as an XLS file
Android
Must be renamed to .xls then opened as an XLS file
Updated January 29, 2021

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