CH3 file format description

Many people often share .ch3 files without providing instructions on how to use them. This can make it difficult for users to determine which program is compatible for editing, converting, or printing .ch3 files. To address this issue, we have created this page to offer assistance and guidance on handling .ch3 files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .ch3 files.

Our aim is to simplify the process and promote seamless use of the .ch3 file format.

1 filename extension(s) found in our database.

.ch3 - Harvard Graphics 3.0 Chart

The CH3 document files are related to Harvard Graphics. The CH3 file is a Harvard Graphics 3.0 Chart. Harvard Graphics was a pioneering presentation program developed for DOS and Microsoft Windows.

Harvard Graphics
Document files
- / -
Harvard Graphics 3.0 Chart related extensions:
DrawExpress Diagram Document
Braille2000 Braille Data
Open Pedigree Standard Exchange Document
Corel WordPerfect Macro
EasyGrapher Document
Adobe FrameMaker Book

Naturally, other applications may also use the .ch3 file extension. Even harmful programs can create .ch3 files. Be especially cautious with .ch3 files coming from an unknown source!

Can't open a .ch3 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 .ch3 file extension is often given incorrectly!

Based on searches conducted on our site in the past year, we have compiled a list of the most common misspellings. These frequent misspellings can cause confusion and hinder search accuracy. By providing this list, we aim to assist users in finding the correct information more easily and improving their overall search experience on our site.

These misspellings were the most common in the past year:

c3, cb3, cg3, ch, che, chr, chw, cm3, cn3, ct3, cu3, cy3, fh3, h3, hc3

Is it possible that the filename extension is misspelled?

There is a possibility that the .ch3 filename extension is misspelled. To assist users in identifying potential errors, we provide a list of similar file extensions in our database.

Filename extensions similar to .ch3:

Amazon Lumberyard Character Asset Data
AquaChem v3 Database
Borland Language Stroke Font
CTRAN/W Sketch Data
CA-Clipper Clipper Header
Compiled HTML Help Index

Operating systems

At, we strive to provide a seamless user experience by ensuring compatibility with a wide range of operating systems. The following is a comprehensive list of the operating systems currently supported by

Windows XP/Vista, Windows 7/8/10, Windows 11, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, macOS, 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 .ch3 file format, then write to us! >> CH3 file