High compression ratio in 7z format with LZMA and LZMA2 compression Supported formats: Packing / unpacking: 7z, XZ, BZIP2, GZIP, TAR, ZIP and WIM Unpacking only: APFS, 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, VHDX, VMDK, XAR and Z.

We recommend to use exe type installer instead of msi installer version. Download 7-Zip 23.01 (2023-06-20):

7z code is a part of 7-Zip program distributed under the GNU LGPL. You can download 7-Zip sources and binaries from Download Page. Major part of 7z code is included to LZMA SDK. Applications that support 7z archives: WinRAR, PowerArchiver, TUGZip, IZArc. Links: 7z at Wikipedia

Decompression Quick and easy file extraction Show the list of files inside an archive Decompress files in the 40+formats (ZIP, 7Z, RAR, etc.)

7z stores files in "solid" groups for better compression. Directory entry is just metadata without data. So directory entries are stored outside of file groups.

Download the latest 7zip release for Windows, Linux and macOS. Choose Windows x64, Windows ARM64, source code, extra tools and LZMA SDK builds with file sizes and SHA-256 hashes.

Archive formats 7z By default, 7-Zip creates 7z-format archives with a .7z file extension. Each archive can contain multiple directories and files. As a container format, security or size reduction are achieved by looking for similarities throughout the data using a stacked combination of filters.

Download Download 7-Zip 26.02 (2026-06-25) for Windows:

7-Zip download files 7-Zip files at www.7-zip.org 7-Zip files at SourceForge

7-Zip is a file archiver (compression) utility for Windows with a great array of features including: high compression ratio in new 7z format with LZMA compression; wide array of supported formats including 7z, ZIP, GZIP, BZIP2 and TAR; unpack support for RAR, CAB, ISO, ARJ, LZH, CHM, Z, CPIO, RPM, DEB & NSIS; better compression than many ...