This conversion basically represents repacking of one of the known Unix archives (.z) to 7-zip compressed archive (.7z). The easiest way to do this conversion would be to download 7-zip as it supports both of these file types and seems to be the obvious choice. But you can find other choices as well.
Home > Search converters: z to 7z
Conversion of z file format to 7z file format beta
Search for z to 7z converter or software able to handle these file types.
Convert Unix compressed archive to 7-ZIP compressed 7z archive.
We have found 4 software records in our database eligible for .z to .7z file format conversion.
Microsoft Windows software 
- convert z to 7z on Windows
7-zip
A free file archiver developed by Igor Pavlov featuring higher compression ratios with LZMA and LZMA2 compression.
It is mainly available for Windows platform (for Mac and Linux are available command line tools) and is the primary program to handle 7z archives. However, also supports various compression file formats.
Supported formats:
Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM
Unpacking only: AR, ARJ, CAB, CHM, CPIO, CramFS, DMG, EXT, FAT, GPT, HFS, IHEX, ISO, LZH, LZMA, MBR, MSI, NSIS, NTFS, QCOW2, RAR, RPM, SquashFS, UDF, UEFI, VDI, VHD, VMDK, WIM, XAR and Z
File extension | Convert | Open | Save | Edit | Create | Import | Export | Extract |
|---|---|---|---|---|---|---|---|---|
Convert from z file | No | Yes | No | No | No | No | No | Yes |
to 7z file | No | Yes | Yes | 7z editor | Yes | 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 z to 7z. 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.
ALZip
ALZip is compression utility that supports about 40 archive file formats. ALzip can open ALZ, ACE, EGG, RAR, ZIP etc.. Also can open disk images, such as ISO and BIN, LCD. ALZip is able to recovery passwords in protected ZIP archives.
Apple macOS / Mac OS X software 
- convert z to 7z on OS X
StuffIt for Mac
StuffIt for Mac is archive utility that is able to create ZIP and SITX archives as well as extract 25 different formats including StuffIt, Zip, RAR and Tar.
StuffIt Deluxe for Mac
StuffIt Deluxe for Mac is utility used to backup, share, archive, encrypt and shrink photos, music, and other documents. It supports variety of archive and compression file formats.
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