B1 compressed archives originate from B1 Free Archiver, which as the name suggest is available for free. You can use this software to repack your files to other common archive formats, including ZIP format. But perhaps other file managers also add support support for .b1 files eventually.
Convert B1 compressed archive to WinZIP Compressed ZIP archive.
We have found one software suitable in our database for this conversion.
Microsoft Windows software - convert b1 to zip on Windows
B1 Archive Manager is a new free file archiving utility available for Windows, Mac OS X, Linux and also for Android mobile platform. The program is still in development stage.
Convert from b1 file
to zip file
The table with program actions contains information about what each program is capable of doing with their files. This may be a good pointer for further searches for certain file conversions and help you find the converter you are looking for if our search result is insufficient for you. However, it is far from perfect and may sometimes show results which are not really usable because of the nature of the software handles the files. So a conversion that appears as possible, just because of matched actions, may in fact not be possible.