ZIP to 7Z
Convert ZIP files to 7Z in seconds, for free. Nothing to install.
Files are deleted from the server automatically after 1 h.
Why convert ZIP to 7Z?
- 7Z usually compresses better than ZIP, so the archive takes less space.
- Convert in a few seconds right in your browser, without installing software.
You don't need to install any software to convert ZIP to 7Z. Upload your file, choose 7Z and download the result a few seconds later. The conversion runs on our servers and your file is deleted automatically after 1 h.
ZIP vs 7Z: comparison
| Feature | ZIPZIP Archive | 7Z7-Zip Archive |
|---|---|---|
| Developer | Phil Katz (PKWARE) | Igor Pavlov |
| Released | 1989 | 1999 |
| Type | archive | archive |
| Compression | lossless | lossless |
| Opens with | Windows, macOS, 7-Zip, WinRAR, The Unarchiver | 7-Zip, WinRAR, The Unarchiver |
Tip: the folder structure inside the archive is kept.
How it works
- Choose or drop your ZIP file.
- Pick 7Z as the output format.
- Click “Convert” and download your file.
ZIP to 7Z: questions and answers
Will quality be lost when converting ZIP to 7Z?
No. Archives are lossless: files are unpacked and packed again byte for byte, and the folder structure is kept.
How long does ZIP to 7Z conversion take?
Usually 1–10 seconds. Several files are processed in parallel.
What is the maximum ZIP file size?
Up to 500 MB per file and up to 20 files at once — for free.
Can I convert ZIP to 7Z on my phone?
Yes. TezConvert works in any browser on Android and iPhone — no app needed.
How do I open a 7Z file?
7Z files open in: 7-Zip, WinRAR, The Unarchiver.
Are my files safe?
Files are used only for the conversion, never shown to anyone, and deleted automatically after 1 h. The original is deleted right after conversion.
⇄ Need the opposite? Convert 7Z to ZIP →