BNF file format description

Many people often share .bnf 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 .bnf files. To address this issue, we have created this page to offer assistance and guidance on handling .bnf files. We provide information on compatible software, editing instructions and conversion options to help users effectively interact with .bnf files.

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

1 filename extension(s) found in our database.

.bnf - Backus-Naur Form File

The BNF data files are related to BNF Parser2. The BNF file is a Backus-Naur Form File. BNF (Backus-Naur Form) is a notation techniques for context-free grammars, often used to describe the syntax of languages used in computing, such as computer programming languages, document formats, instruction sets and communication protocols.

BNF Parser2
Data files
- / -
Backus-Naur Form File related extensions:
WinSMITH Weibull Data
OnScale Warnings Data
Tableau Bookmark Data
Mastercam Numerical Control Data
HyperRESEARCH 2 Study
Kenwood CD Player Firmware

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

Can't open a .bnf 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 .bnf 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:

bbf, bf, bfn, bgf, bhf, bjf, bmf, bn, bnb, bnc, bnd, bng, bnr, bnt, bnv

Is it possible that the filename extension is misspelled?

There is a possibility that the .bnf 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 .bnf:

Beyond Good and Evil Game Archive
Fire Dynamics Simulator Boundary Data
Cryo BF Game Data
libigl Skeletal Data
Microsoft Flight Simulator Panels Data
The Bro NetFlow Data

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

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