The .cfg file extension is assigned to a computer's configuration files. Configuration files are used by a wide range of programs and applications. The information within some CFG files contains a program's initial configuration and settings.
Some files with the .cfg file extension are also created when you change the settings of a particular program or computer application. For example, if you change the interface settings of a particular application the application will create a new CFG file to accommodate those settings.
Files that have the .cfg file extension are usually written in ASCII code, although the files may be stored in a different format depending on the application that it was created with.
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If you have additional information about the CFG file format or software that uses files with the CFG suffix, please do get in touch - we would love hearing from you.