Generally, you can convert any archive to another, provided you have all the pieces if the archive is split. However, it does not make sense to convert individual pieces so this conversion is not possible.
Convert Compressed file from a multi-volume archive (part 3) to Compressed file from a multi-volume archive (part 1).
We found 8 software records in the database related to .003 to .001 file format conversion.
Microsoft Windows software - convert 003 to 001 on Windows
Popular open source file archiver with a high compression ratio
Convert from 003 file format
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 003 to 001. 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
A free open source archive utility
Apple macOS / Mac OS X software - convert 003 to 001 on OS X
A backup and archive utility
Mac version of the popular utility
Linux/Unix software - convert 003 to 001 on Linux
A Linux application used as frontend for popular compression tools
Linux version of popular file archiver
A file archive manager