A daily updated filename extension database!

CM file extension

The table below provides useful information about the .cm file extension. It answers questions such as:

  • What is the .cm file?
  • What program do I need to open a .cm file?
  • How can the .cm file be opened, edited or printed?
  • How can I convert .cm files to another format?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

✅ GTA San Andreas CLEO Custom Mission

CM file is a GTA San Andreas CLEO Custom Mission. CLEO is a tool that allows you to run portions of mission scripts in GTA San Andreas without having to replace that main.scm file or starting a new game.
CM format description not yet available
Category: Game Data files
Application: GTA San Andreas
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
CM aliases:
CM related links:
CM related extensions:
GTA San Andreas Game Replay

GTA 4 Movie Clip

Other types of files may also use the .cm file extension.

🚫 The .cm file extension is often given incorrectly!

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

ch, xm, sm, fm, cn, ck, vm, mc, dm, cl

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

ChucK Source Code
FileMaker Pro Data
Stepmania Song
BYOND Dream Maker Source Code
OpenCL Kernel
Velocity Macro File
Adobe FrameMaker Document
Carlson Survey Centerline File
FastTracker 2 Music Module
Sendmail M4 Configuration Source

🔴 Can't open a .cm 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 cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .cm file association, check the FAQ.

🔴 Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .cm file extension, write to us!

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