Home : File Types : B1 File

.B1 File Extension

File TypeB1 Compressed Archive

DeveloperCatalina Group
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Rare Uncommon Average Common Very Common
CategoryCompressed Files


This file is saved in a binary format, which requires a specific program to read its contents.

What is a B1 file?

Compressed archive created by B1 Free Archiver, a free file compression utility; based off of the .LZMA format and uses an openly published format; can be opened with B1 Free Archiver to extract the original set of files.

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Programs that open B1 files
B1 Free Archiver
B1 Free Archiver
B1 Free Archiver
B1 Free Archiver
Updated 11/27/2012

.B1 Extension Information

This page contains information about the file extension B1 and its known file associations. Our goal is to help you understand what a *.b1 file is and how to open it.

The B1 Compressed Archive file type, file format description, and programs listed on this page have been individually researched and verified by the FileInfo team. We strive for 100% accuracy and do not publish any information we have not verified.

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