What Is an XLM File?

How to Open, Edit, & Convert XLM Files

Screenshot of several XLM files in Windows 10
XLM Files.

A file with the XLM file extension is an Excel 4.0 Macro file. Macros allow automation so that repetitive tasks can be "played" to save time and lower the likelihood of errors.

Newer Excel formats like XLSM and XLTM are similar to XLM in that they can store macros, but unlike XLM files, they are actual spreadsheet files that include macros. An XLM file is an outdated format that is, in and of itself, a macro file.

Note: It may seem like the XLM and XML formats are similar since their file extensions look the same, but they're actually two entirely different file formats.

How to Open an XLM File

Warning: Take great care when opening executable file formats like .XLM files that you may have received via email or downloaded from websites you're not familiar with. See my List of Executable File Extensions for a listing of file extensions to avoid and why.

Though Microsoft suggests that you no longer use them, you can still open XLM files with Microsoft Excel. See Microsoft's Working with Excel 4.0 Macros for help enabling Excel to run XLM macros.

Microsoft's free Excel Viewer lets you open XLM files without Microsoft Excel, as does LibreOffice Calc.

If you find that an application on your PC does try to open the XLM file but it's the wrong application or if you would rather have another installed program open XLM files, see ourĀ How to Change the Default Program for a Specific File Extension guide for making that change in Windows.

How to Convert an XLM File

You may be able to open an XLM file in Microsoft Excel or LibreOffice Calc and then save the open file to another similar format.

Note: If you're trying to figure out how to convert an XML file, see What is an XML File? for information on doing that.

More Help With XLM Files

See Get More Help for information about contacting me on social networks or via email, posting on tech support forums, and more. Let me know what kinds of problems you're having with opening or using the XLM file and I'll see what I can do to help.