This conversion basically represents repacking compressed archives in CPGZ format (UNIX CPIO) to a standard ZIP archive used on Windows platform. You can do this conversion for example in the original WinZip, but it is likely that also other similar utilities are capable of this conversion.
Convert Compressed UNIX CPIO archive to WinZIP Compressed ZIP archive.
We have found 2 software records in our database eligible for .cpgz to .zip file format conversion.
Microsoft Windows software - convert cpgz to zip on Windows
Another popular file archiver and compressor
Convert from cpgz 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 cpgz to zip. 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.
Apple macOS / Mac OS X software - convert cpgz to zip on OS X
Mac version of the popular WinZip compression utility.