What is a 7z file?

A 7z file is a file that has been zipped or compressed with the 7-Zip tool. The 7-Zip tool or a similar decompression program is necessary to unzip most 7z files. Text-only 7z files can be opened in a text editor, such as Notepad.

A 7z file can be converted to another file type either by opening it with the 7-Zip tool and saving it in a different format, or by using a file conversion program or online service. The 7-Zip tool is open source software available for free online. The tool zips files with a high compression ratio to save or send more data using less memory.