How to convert ZIP to 7-Zip
- 1
Upload your file
Drag and drop a file or click to select one. Keep this page open while the file uploads and converts.
- 2
Convert ZIP to 7-Zip
NexMedia converts ZIP to 7-Zip on its own servers. Processing time depends on the file size and how busy the queue is.
- 3
Download the converted file
When the conversion finishes, the download appears on this page. Your converted file is kept for 2 hours, then deleted.
About ZIP
ZIP is the most widely used archive format, created by Phil Katz in 1989. It compresses each file separately, usually with the Deflate method.
Sending several files as one download or attachment; Windows and macOS open ZIP files without extra software.
Classic ZIP encryption is weak, and AES-encrypted ZIP files need a tool such as 7-Zip to open.
Convert ZIP to 7-Zip online free, no account required — 7-Zip is the archive format of 7-Zip.
Change ZIP to 7-Zip without losing quality — convert ZIP to 7-Zip free in your browser.
Why won't zipping my photos or videos make them smaller? JPG, MP4 and similar formats are already compressed, so a ZIP archive of them barely shrinks — converting the media to a leaner format is what actually saves space.
About 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.
macOS and older versions of Windows need extra software to open 7z files.
Why convert archives to 7Z? When size matters most: LZMA compresses noticeably tighter than ZIP, and 7-Zip itself is free.
What changes when you convert ZIP to 7-Zip
- No data is lost: every file in your ZIP archive is packed into the 7-Zip archive byte for byte, with its name and folder.
- Your ZIP archive is unpacked and its files are packed again into a new 7-Zip archive; file names and folders are kept, and the ZIP file itself is not stored inside.
Settings you can change
Before you convert ZIP to 7-Zip, you can adjust: Compression level, Split size, Password, and Root folder.
Limits
Each plan sets a maximum file size and a number of conversions per day, and video and audio files also have a maximum length. Guests can convert files up to 100 megabytes and 5 per day; a free account raises this to 500 megabytes and 25 per day; paid plans go up to 100 gigabytes.
Your converted 7-Zip file is kept for 2 hours, then deleted.
ZIP to 7-Zip: questions and answers
Does converting ZIP to 7-Zip reduce quality?
No data is lost: every file in your ZIP archive is packed into the 7-Zip archive byte for byte, with its name and folder.
What is the difference between ZIP and 7-Zip?
ZIP is the universally supported archive format. 7-Zip is the archive format of 7-Zip.
Can I change the settings when converting ZIP to 7-Zip?
Before you convert ZIP to 7-Zip, you can adjust: Compression level, Split size, Password, and Root folder.
Do I need an account to convert ZIP to 7-Zip?
No. You can convert ZIP to 7-Zip without an account; signing in raises the file-size and daily limits.
How long is my converted 7-Zip file kept?
The 7-Zip file you convert from ZIP is kept for 2 hours, then deleted automatically.
Does converting ZIP to 7-Zip keep my folder structure?
Your ZIP archive is unpacked and its files are packed again into a new 7-Zip archive; file names and folders are kept, and the ZIP file itself is not stored inside.
Will converting ZIP to 7-Zip change my original file?
No. The conversion reads your ZIP and writes a new 7-Zip file, leaving your original ZIP file untouched.