7-Zip: conversion steps
- Upload your 7-Zip file to start.
- Convert 7-Zip to bzip2.
- Download the 7-Zip file.
About 7-Zip files
the archive format of 7-Zip
7z is the archive format of the free 7-Zip program. Its LZMA and LZMA2 compression usually packs files smaller than ZIP.
Distributing large software and data sets, and archives encrypted with AES-256.
7-Zip: what conversion changes
Converting 7-Zip repacks losslessly.
7-Zip: settings to change
Before you convert 7-Zip files, you can adjust: Compression level, Split size, Password, and Root folder.
Limits of the 7-Zip format
macOS and older versions of Windows need extra software to open 7z files.
Common questions about 7-Zip
Why can't Windows File Explorer open my 7Z archive? Windows only unpacks ZIP natively, so a 7Z needs 7-Zip or a similar tool — converting to ZIP makes the archive openable anywhere with nothing installed.
Why convert archives to 7Z? When size matters most: LZMA compresses noticeably tighter than ZIP, and 7-Zip itself is free.