CHB file format description

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

2 filename extension(s) found in our database.

.chb - OLE DB Checkbook Data

The CHB data files are related to OLE DB Checkbook. The CHB file is an OLE DB Checkbook Data. OLE DB (Object Linking and Embedding, Database) is an API designed by Microsoft, allows accessing data from a variety of sources in a uniform manner. The OLE DB Checkbook seems to be no longer supported.

OLE DB Checkbook
Data files
- / -
OLE DB Checkbook Data related extensions:
WinSCP Temporary Data
WRAP DAY Message Data
ONETEP Density Kernel
Sealed MP3 Audio Data
Sphinx Responses Data
AZZ Cardfile Database

.chb - CHMReader.NET Internal Data

The CHB data files are related to CHMReader.NET. The CHB file is a CHMReader.NET Internal Data. CHMReader.NET is a CHM reader software for PocketPC/Windows CE.

Data files
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CHMReader.NET Internal Data related extensions:
Therion TH2 Map
Timbuktu Pro Remote Control Software Format Data
Simple Perl ARchive Manager Data
nVision Layout
Panorama Database File Set
ButtonGadget Data

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

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

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

cb, cbb, cbh, cgb, ch, chf, chg, chh, chn, chv, cjb, cmb, cnb, ctb, cub

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Harwell Boeing Sparse Matrix
DB/TextWorks SQL Textbase Structure Definition
ChessBase Search Booster
Reason Combinator Instrument Patch
Scitex Continuous Tone
SGI Scalable Graphics Compositor Combination File

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 .chb file format, then write to us! >> CHB file