Supported formats

Format	Compressing	Decompressing	Filename Extensions
7z	X	X	7z
ZIP	X	X	zip
GZIP	X	X	gz gzip tgz
BZIP2	X	X	bz2 bzip2 tbz2 tbz
TAR	X	X	tar
RAR		X	rar
CAB		X	cab
ARJ		X	arj
Z		X	z taz
CPIO		X	cpio
RPM		X	rpm
DEB		X	deb
LZH		X	lzh lha
SPLIT		X	001 002 ...
CHM		X	chm chw hxs
ISO		X	iso
COMPOUND		X	msi doc xls ppt
WIM		X	wim swm
NSIS		X	exe

ZIP

7-Zip creates fully ZIP compatible archives. Anyone can decompress these files by any ZIP compatible decompression utility. During compression 7-Zip can use one of the following ZIP compression methods:

• 0 - Store
• 8 - Deflate
• 9 - Deflate64
• 12 - BZip2

The current version of the 7-Zip can extract any files from ZIP archive that were compressed with one of the following methods:

• 0 - Store
• 1 - Shrink
• 6 - Implode
• 8 - Deflate
• 9 - Deflate64
• 12 - BZip2

Files compressed with other ZIP compression methods can't be extracted by the current version of the 7-Zip. But these supported methods are the most popular today, and therefore 7-Zip can decompress most ZIP archives. To extract files compressed with non-supported methods you must use some other ZIP utility.

7-Zip supports the Zip64 extension of ZIP format.

The current version of 7-Zip doesn't support Zip multivolume archives.

LZH

7-Zip supports LZH archives only for listing, browsing and decompressing. 7-Zip supports -lh0-, -lh4-, -lh5-,-lh6- and -lh7- methods.