3MM file format description

Many people often share .3mm files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .3mm files. To address this issue, we have created this page to offer assistance and guidance on handling .3mm files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .3mm files.

Our aim is to simplify the process and promote seamless use of the .3mm file format.

1 filename extension(s) found in our database.

.3mm - 3D Movie Maker Project

The 3MM multimedia files are related to 3D Movie Maker. The 3MM file is a 3D Movie Maker Project. 3D Movie Maker is a program created by Microsoft's "Microsoft Kids" subsidiary in 1995. The 3D Movie Maker seems to be no longer supported.

3D Movie Maker
Multimedia files
- / -
3D Movie Maker Project related extensions:
Emperor Media Player Playlist
Sandisk Sansa Playlist
xCOMPOSER.pro Multimedia Data
Lynda.com Encrypted Offline Video
Magic Karaoke Maker Playlist
Opus Creator Multimedia File

Naturally, other applications may also use the .3mm file extension. Even harmful programs can create .3mm files. Be especially cautious with .3mm files coming from an unknown source!

Can't open a .3mm 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:


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.

The .3mm file extension is often given incorrectly!

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

3m, 3ml, emm, mm, rmm, wmm

Is it possible that the filename extension is misspelled?

There is a possibility that the .3mm filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .3mm:

FreeMind MindMap
EARS Mail Merge Definition
Kodak EasyShare Thumbnail Cache
NeXtMidas Macro
Street Fighter IV Model
Xcode Objective-C Program Source Code

Operating systems

At DataTypes.net, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by DataTypes.net:

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, Mac OS X, iOS, Android

If you find the information on this page useful, please feel free to link to this page.


If you have useful information about the .3mm file format, then write to us!

DataTypes.net >> 3MM file