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.
3 filename extension(s) found in our database.
.chm - Compiled HTML Help
The CHM document files are related to HTML Help Workshop. 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.
- Application:
- HTML Help Workshop
- Category:
- Document files
- Mime-type:
- application/x-chm
- Magic:
- - / -
- Aliases:
- -
- Compiled HTML Help related extensions:
.chm - ChemDraw Chemical Structure
The CHM data files are related to ChemOffice. 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.
- Application:
- ChemOffice
- Category:
- Data files
- Mime-type:
- application/octet-stream
- Magic:
- - / -
- Aliases:
- -
- ChemDraw Chemical Structure related extensions:
.chm - SWAT Soil Chemical Input Data
The CHM data files are related to SWAT. 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.
- Application:
- SWAT
- Category:
- Data files
- Mime-type:
- application/octet-stream
- Magic:
- - / -
- Aliases:
- -
- SWAT Soil Chemical Input Data related extensions:
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:
example.chm
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 .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:
- .cnm
- Pegasus Mail New Message
- .cbm
- Color FBM Image
- .vhm
- HotMux Thermocouple Data Log
- .cbm
- ChessBase Multimedia Baggage Data
- .ch
- Scitex Continuous Tone
- .chl
- WinFast PVR Channel List
Operating systems
DataTypes.net 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
If you find the information on this page useful, please feel free to link to this page.
If you have useful information about the .chm file format, then write to us!