>> CHM file

CHM file format description

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

4 filename extension(s) found in our database.

.chm - Compiled HTML Help

The CHM document files are related to HTML Help Workshop. The CHM file is a Compiled HTML Help. HTML Help is the standard help system for the Windows platform. The HTML Help compiler (part of the HTML Help Workshop) makes it possible to compress HTML, graphic, and other files into a relatively small compiled help (.chm) file.

HTML Help Workshop
Document files
- / -
Compiled HTML Help related extensions:
CU-Writer Document
TablEdit Tablature
XML Paper Document
Lumion v9 3D Scene
Impact CAD Drawing
StitchCraft Design

.chm - ChemDraw Chemical Structure

The CHM data files are related to ChemOffice. The CHM file is a ChemDraw Chemical Structure. ChemDraw is a major molecule editor developed by the cheminformatics company CambridgeSoft. ChemDraw is part of the ChemOffice suite of programs and is available for Macintosh and Microsoft Windows.

Data files
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ChemDraw Chemical Structure related extensions:
ChemDraw Stationery Document
ChemDraw Exchange Document
ChemDraw XML Document
ChemDraw Chemical Modeller Output

.chm - SWAT Soil Chemical Input Data

The CHM data files are related to SWAT. The CHM file is a SWAT Soil Chemical Input Data. SWAT (Soil Water Assessment Tool) is an hydrology model with the following components: Weather, surface runoff, return flow, percolation, evapotranspiration, transmission losses, pond and reservoir storage, crop growth and irrigation, groundwater flow, reach routing, nutrient and pesticide loading, water transfer.

Data files
- / -
SWAT Soil Chemical Input Data related extensions:
SWAT Sub-basin Output Data
SWAT Basin Input Data
SWAT Auto-calibration Data
SWAT Master Watershed Data
SWAT Input Control Data
SWAT Weather Forecast Input Data

.chm - Two Worlds 2 Animation Data

The CHM game data files are related to Two Worlds 2. The CHM file is a Two Worlds 2 Animation Data. Two Worlds 2 is an action role-playing game developed by Polish video game developer Reality Pump.

Two Worlds 2
Game Data files
- / -
Two Worlds 2 Animation Data related extensions:
The Land of UM Demo Data
Warhammer 40000: Dawn of War 2 Binary Data
SimCity 3000 Building Architect Building Data
Total Annihilation Unit Script
SimCity 4 Album Info Data
Total Annihilation Third-party Unit Data

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

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

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

cbm, cgm, ch, chh, chj, chk, chl, chn, cm, cmh, cmm, cnm, ctm, cym, dhm

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

WinFast PVR Channel List
Color FBM Image
HotMux Thermocouple Data Log
ChessBase Multimedia Baggage Data
Pegasus Mail New Message
Scitex Continuous Tone

Operating systems currently supports the following operating systems:

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

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