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What is an HMT File?

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Question: What is an HMT File?

Did you find an HMT file on your computer and wonder what program should open it? Maybe someone emailed you an HMT file but you're not sure how to use it. Perhaps you tried to open the HMT file but Windows told you that it could not open it.

Before you can open an HMT file (assuming it's even a file format that's intended to be viewed or edited), you'll need to determine what kind of file the .HMT file extension refers to.

Answer: A file with the HMT file extension is a HighMAT file.

Other types of files may also use the HMT file extension. If you know of any additional file formats that use the .HMT extension, please let me know so I can update this information.

How To Open an HMT File:

The easiest way to open an HMT file is to double-click on it and let your PC decide which default application should open the file. If no program opens the HMT file then you probably don't have an application installed that can view and/or edit HMT files.

Warning: Take great care when opening executable file formats 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.

As of this writing, I don't have information on any specific applications that will view HMT files or open HMT files for editing. If you know of any, please send me a quick email and let me know the name of the program so I can update this page.

Tip: Use Notepad or another text editor to open the HMT file. Many files are text-only files meaning no matter the file extension, a text editor may be able to properly display the file's contents. This may or may not be the case with HMT files but it's worth a try.

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

How To Convert an HMT File:

There are two main ways to attempt to convert an HMT file to another file type:

The first option involving opening the HMT file in its native program is preferable because it's both easier and will probably result in a more accurate file conversion. Of course if you don't have a program that opens HMT files, a third-party file conversion tool (the second option) could be very useful.

Important: You cannot usually change a file extension (like the HMT file extension) to one that your computer recognizes and expect the newly renamed file to be usable. An actual file format conversion using one of the methods described above must take place in most cases.

Still Having Problems Opening or Using an HMT File?

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 HMT file and I'll see what I can do to help.

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