>> B3 file

B3 file format description

Many people share .b3 files without attaching instructions on how to use it. Yet it isn’t evident for everyone which program a .b3 file can be edited, converted or printed with. On this page, we try to provide assistance for handling .b3 files.

1 filename extension(s) found in our database.

.b1 - VTrain Data File

The B1 data files are related to VTrain. B1 file is a VTrain Data File. VTrain is a complete tool that will help you improve your vocabulary in several languages, with a simple and entertaining learning system.

Data files
- / -
b2, b3, b4, b5
VTrain Data File related extensions:
VTrain Data File
VTrain Learning Card

Naturally, other applications may also use the .b3 file extension. Even harmful programs can create .b3 files. Be especially cautious with .b3 files coming from an unknown source!

Can't open a .b3 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 .b3 file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

3b, be, br, bw, g3, n3

Is it possible that the filename extension is misspelled?

Similar file extensions in our database:

Gerber Inner Routing Layer 1 Data
3D-Coat Project
G3 FAX Image
SEZ Online Bill of Entry Document
Paradox Query-By-Example Query
Omnis Studio Data File

Operating systems currently supports the following operating systems:

Windows XP/Vista, Windows 7/8, Windows 10, CentOS, Debian GNU/Linux, Ubuntu Linux, FreeBSD, Mac OS X, iOS, Android

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If you have useful information about the .b3 file format, then write to us!

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