Convert ZIP to 7Z
Free, fast and secure — convert ZIP to 7Z right in your browser.
Convert ZIP to 7Z for wider compatibility
Converting ZIP to 7Z gives you a more widely supported file that opens cleanly across more devices, apps and platforms — handy when ZIP will not play nicely everywhere.
How to convert ZIP to 7Z
- 1 Drop your ZIP file into the converter above.
- 2 It is converted to 7Z automatically — no settings to fiddle with.
- 3 Download your new 7Z file instantly.
ZIP vs 7Z
| Feature | ZIP | 7Z |
|---|---|---|
| Compression | Lossless | Lossless |
| MIME type | application/zip | application/x-7z-compressed |
| Best for | Sharing and sending collections of files that must open anywhere without extra tools. | Packing large collections as tightly as possible when recipients can use 7-Zip. |
About the formats
ZIP archive
ZIP is the world’s most common archive format, bundling many files and folders into one compressed container. Every major operating system opens it natively, with no extra software.
Strengths
- Opens on Windows, macOS and Linux out of the box
- Bundles many files and folders together
- Fast, lossless compression
Limitations
- Compresses less tightly than 7z
- Weak built-in encryption
- No solid-archive mode
Best for: Sharing and sending collections of files that must open anywhere without extra tools.
7z archive
7z is the native format of 7-Zip, using LZMA compression to squeeze files far smaller than ZIP. It supports strong AES-256 encryption and solid archives, at the cost of needing 7-Zip-compatible software.
Strengths
- Excellent compression ratio
- Strong AES-256 encryption
- Handles very large archives
Limitations
- Needs 7-Zip-compatible software to open
- Slower to compress
- Less universal than ZIP
Best for: Packing large collections as tightly as possible when recipients can use 7-Zip.