CGM file format description

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

3 filename extension(s) found in our database.

.cgm - Computer Graphics Metafile

The CGM graphic files are related to Vizex Reader. The CGM file is a Computer Graphics Metafile. Computer Graphics Metafile (CGM) is a file format for 2D vector graphics, raster graphics, and text, and is defined by ISO/IEC 8632.

Vizex Reader
Graphic files
- / -
Computer Graphics Metafile related extensions:
AtariTools-800 Player Data
Atari 8-bit Floor Designer Image
CinePaint XML-tagged Image
MSX2 Screen 4 Bitmap Image
Colored PostScript
XenoDream Graphics Data

.cgm - Altair FEKO Matrix Equation Data

The CGM data files are related to Altair FEKO. The CGM file is an Altair FEKO Matrix Equation Data. Altair Feko is a comprehensive computational electromagnetics (CEM) code used widely in the telecommunications, automobile, space and defense industries.

Altair FEKO
Data files
- / -
Altair FEKO Matrix Equation Data related extensions:
XLIFF Document Settings Data
Hex Editor Neo License Data
Kaspersky Lab Unicode Application Description
NavisWorks Presenter Material Palette
Stormshield Data Security Volume Container
ActiveModeler Avantage Model

.cgm - Heroes of Might and Magic III Saved Game

The CGM game data files are related to Heroes of Might and Magic III. The CGM file is a Heroes of Might and Magic III Saved Game. Heroes of Might and Magic III is a turn-based strategic war game, set up in a classical role-playing game Environment.

Heroes of Might and Magic III
Game Data files
- / -
Heroes of Might and Magic III Saved Game related extensions:
Vampire: The Masquerade Archive
RPG Maker 2000 Database
Freedom Force Game Data
Bloodrayne Game Archive
Jazz Jackrabbit 2 Music
SimCity Game Data

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

Can't open a .cgm 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 .cgm file extension is often given incorrectly!

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

cbm, cfm, cg, cgh, cgk, cgl, cgn, chm, cm, cmg, cnm, crm, ctm, cvm, cym

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Color FBM Image
AdPlug Callus YM2151 Register Log
Pegasus Mail New Message
ChessBase Multimedia Baggage Data
Chessmaster Saved Game
NBA 2K12 Saved Game

Operating systems currently supports the following operating systems:

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

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If you have useful information about the .cgm file format, then write to us! >> CGM file