How to Uncompress a 7z File on Any Device or OS

The .7z format is one of the most efficient compression formats available, often achieving significantly smaller file sizes than ZIP or RAR. But unlike ZIP files, which most operating systems can handle natively, 7z files require a bit of extra setup depending on where you're working. Here's what you need to know.

What Is a 7z File?

A 7z file (pronounced "seven-zip") is an archive created by the open-source 7-Zip compression tool. It uses the LZMA and LZMA2 compression algorithms, which are designed to maximize compression ratios — meaning files get squeezed down smaller than most other formats can manage.

7z archives can contain:

Single or multiple files and folders
Password-protected or encrypted content (using AES-256 encryption)
Split archives spread across multiple volumes

Because the format is open-source, several third-party tools support it beyond the original 7-Zip application.

How to Uncompress a 7z File on Windows

Windows does not natively support 7z extraction — unlike ZIP, there's no built-in right-click option. You'll need a tool installed first.

Using 7-Zip (the original tool)

Download and install 7-Zip from 7-zip.org
Right-click the .7z file in File Explorer
Hover over the 7-Zip submenu
Select "Extract Here" (extracts to the current folder) or "Extract to [folder name]" (creates a subfolder)

Using Other Windows Tools

Several popular archive managers also handle 7z files:

WinRAR — supports 7z extraction natively
PeaZip — open-source and supports a wide range of formats
Bandizip — lightweight with a clean interface

All of these integrate into the Windows right-click context menu after installation.

How to Uncompress a 7z File on macOS 🖥️

macOS also lacks native 7z support. Your options:

The Archive Utility workaround

macOS's built-in Archive Utility does not open 7z files. Double-clicking one will typically produce an error or no action.

Third-party apps for Mac

The Unarchiver — free, available on the Mac App Store, and widely considered the simplest option for casual users
Keka — a paid option with more control over extraction behavior and format support
Commander One — file manager with built-in archive support

Once installed, these apps usually register themselves as the default handler for .7z files, so double-clicking the file becomes all you need to do.

How to Uncompress a 7z File on Linux

Linux users typically have the most direct path, since p7zip — the Linux port of 7-Zip — is available through standard package managers.