CGF File Type

- The quick facts

What are CGF files and how to open them

Are you having problems opening a CGF file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a CGF file?

CGF files have multiple uses, and CAL Compressed Data is one of them.

CAL Compressed Data

We have not yet analyzed in detail what these files contain and what they are used for. We're working on it.

How to open CGF files

Important: Different programs may use files with the CGF file extension for different purposes, so unless you are sure which format your CGF file is, you may need to try a few different programs.

While we have not verified the apps ourselves yet, our users have suggested 3 different CGF openers which you will find listed below.

Last updated: June 29, 2022

More file formats using the CGF extension

Through our research of CGF files, we know that the following formats exist. However, we have not yet analyzed them in detail.

  • EGrid32 Compilable Grid Format

Various apps that use files with this extension

These apps are known to open certain types of CGF files. Remember, different programs may use CGF files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Profiler Gauge PluginProfiler Gauge PluginUser submitted
MIKE ZeroMIKE ZeroUser submitted
Corel Family TreeCorel Family TreeUser submitted

Help us help others helps thousands of users every day, and we would love to hear from you if you have additional information about CGF file formats, example files, or compatible programs. Please use the links below or email us at to discuss further.