7Z converter - online and free

Step 2 - Convert your files to

Or choose a different format

Step 3 - Start converting

(And agree to our Terms)

7z converter
A 7z file is also known as a 7-Zip compressed file and was developed by Igor Pavlov. It was developed in the late 1990s before being finally released in 1999 and is a compressed archive which uses 7 different types of open source archive technology including LZMA compression which compresses at an estimated 1MB/s and decompresses at up to 20MB/s. 7z files are particularly popular because of how efficient they are. They can contain multiple directories, as well as files, all of which are compressed which means that they support files up to the size of 16,000 Petabytes. To open a 7z file users can use 7-Zip, WinZip for both Windows and MacOS and File Viewer Plus.

Any Operating System

Zamzar works for those who are running Windows, Linux or are on an OS for Mac.


All of our hardware runs in world-class, highly secure data centres utilizing state-of-the-art electronic surveillance and multi-factor access control systems.

Ease of Use

You can convert a file for free in just a few clicks, without any need to register for an account.


We recognise that you have entrusted Zamzar with your files and your personal information, and handling your data is a serious responsibility; we want you to know how we go about doing that. Our privacy policy can be read here.

You're in good company:
Zamzar has converted over 510 million files since 2006

7Z Convert to 7Z

Using Zamzar it is possible to convert to 7Z from a variety of other formats

  • cab to 7z (Cabinet File)
  • lzh to 7z (Compressed Archive File)
  • rar to 7z (WinRAR Compressed Archive)
  • tar to 7z (Tape Archive File)
  • tar.bz2 to 7z (Bzip 2 UNIX Compressed File)
  • tar.gzh to 7z (Gzip Compressed Archive)
  • yz1 to 7z (DeepFreezer Compressed Archive)
  • zip to 7z (Compressed Archive File)

7Z Converter - Convert file now

7Z Convert from 7Z

Using Zamzar it is possible to convert from 7Z to a variety of other formats

  • 7z to cab (Cabinet File)
  • 7z to lzh (Compressed Archive File)
  • 7z to tar (Tape Archive File)
  • 7z to tar.gz (Gzip Compressed Archive)
  • 7z to yz1 (DeepFreezer Compressed Archive)
  • 7z to zip (Compressed Archive File)

7Z Converter - Convert file now