AM4 file format description

Many people share .am4 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .am4 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .am4 files.

1 filename extension(s) found in our database.

Naturally, other applications may also use the .am4 file extension. Even harmful programs can create .am4 files. Be especially cautious with .am4 files coming from an unknown source!

Can't open a .am4 file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows can't open this file:

example.am4

To open this file, Windows needs to know what program you want to use to open it. Windows can go online to look it up automatically, or you can manually select one from a list of programs that are installed on your computer.

To avoid this error, you need to set the file association correctly.

• Open Control Panel > Control Panel Home > Default Programs > Set Associations.
• Select a file type in the list and click Change Program.

The .am4 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

a4m, zm4, m4, amr, am, qm4, amt, ame

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

.a4m

Macromedia Authorware Macintosh File

.amt

Alphacam 2D/3D Mill Tool Data

.am

GNU Automake Input File

.m4

M4 Macro File

.ame

CAPRA Seismic Hazard Data

.ma4

Diablo 2 Game Data

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