A cnf file extension is related to the Lotus 1-2-3, a spreadsheet editing software. A cnf file stores configuration data.

There are 4 other file types using
the CNF file extension!

empty icon.cnf - Network configuration data [common]

empty icon.cnf - MySQL startup configuration

empty icon.cnf - KiSS paper doll set

empty icon.cnf - Origin configuration

CNF file extension - Lotus 1-2-3 configuration data

What is cnf file? How to open cnf files?

File type specification:

Configuration file type icon Configuration file type

cnf file icon: cnf filetype icon

The cnf file extension is associated with the Lotus 1-2-3, a  spreadsheet editor developed by IBM and distributed as a part of Lotus SmartSuite.

The cnf file contains configuration options of Lotus 1-2-3. In default the Lotus 1-2-3 configuration file is called 123.cnf.

The default software associated to open cnf file:

Lotus 1-2-3 icon

IBM logoLotus 1-2-3  Microsoft Windows software

Company or developer:

IBM Lotus 1-2-3 is spreadsheet application very popular in 80s and 90s of 20th century. It was released for Microsoft Windows, MS-DOS, Mac OS and OS/2. In 2002 IBM stopped the developing of the IBM Lotus 1-2-3. In the latest versions is Lotus 1-2-3 fully compatible with Microsoft Excel.

Lotus SmartSuite picture or screenshot

IBM logoLotus SmartSuite  Microsoft Windows software

Company or developer:

Lotus SmartSuite is office suite for Microsoft Windows developed by IBM that includes Lotus 1-2-3 spreadsheet, Word Pro word processor, Lotus Organizer personal information manager, Freelance Graphics presentations, and Approach relational database system.

Help how to open:

This file type is not meant to be opened directly, there is no software that could open and work with it directly, or there is no information available in public sources about opening this file type. This is usually the case of some internal data files, caches, temporary files etc.

How to convert:

As far as we know, this .cnf file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

List of software applications associated to the .cnf file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open cnf file, edit cnf file, convert cnf file, view cnf file, play cnf file etc. (if exist software for corresponding action in File-Extensions.org's database).

Click on the tab below to simply browse between the application actions, to quickly get a list of recommended software, which is able to perform the specified software action, such as opening, editing or converting cnf files.

Settings file type for software that use cnf file - Lotus 1-2-3 configuration data

Programs supporting the exension cnf on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about Lotus 1-2-3 for settings cnf file action.

Microsoft Windows:

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