It appears that rar to bz conversion is related to attempts to transform (convert) WinRAR archives (.rar) to BZIP archives (.bz). You can probably do his with plenty of file managers, especially those that support BZIP format as RAR format is generally well-supported.
Convert WinRAR RAR compressed archive to BZIP compressed file archive.
We found 2 software records in the database related to .rar to .bz file format conversion.
Microsoft Windows software - convert rar to bz on Windows
One of the many available file compression utilities
Convert from rar file format
|Yes, ALZip supports rar file conversion as a source file type.||Yes||No||No||No||No||No||Yes|
|Yes, ALZip supports bz file conversion as a target file type.||Yes||No||No||No||No||No||Yes|
The tables with software actions are a good pointer for what a certain program does with various file types and often may give users a good hint how to perform certain file conversion, for example the above-mentioned rar to bz. However, it is not perfect and sometimes can show results which are not really usable because of how certain programs work with files and the possible conversion is thus actually not possible at all.
One of the oldest and most popular shareware file archiver and data compression utility