7Z to ZIP Converter
Convert 7Z to ZIP online for free. Fast, secure archive conversion that preserves folder structure and file integrity. No software installation required.
Up to 50 MB per file. Sign up free to convert files up to 100 MB.
| File name | Size | Convert to |
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Checking files and selected output formats.
7z to ZIP: maximum compression to maximum compatibility
7z uses the LZMA/LZMA2 algorithm which achieves 30-40% better compression than ZIP's DEFLATE, especially on large heterogeneous file collections where 7z's solid compression (compressing all files as one stream) excels. ZIP uses per-file DEFLATE compression with a 32 KB window, while LZMA2 uses dictionaries up to 1.5 GB. The conversion decompresses all files from the 7z archive and re-compresses them individually with DEFLATE into a ZIP archive. The result is larger but opens natively on every operating system.
Convert 7z to ZIP when sharing archives with users who don't have 7-Zip installed. Windows, macOS, and Linux all extract ZIP natively without third-party software. Accept the larger file size for the convenience of universal compatibility.
7Z vs ZIP: Side-by-side
Technical comparison of the two formats, useful for deciding which to use, or for confirming what changes during conversion.
| Property | 7Z | ZIP |
|---|---|---|
| Full name | 7-Zip Archive | ZIP Archive |
| Year introduced | 1999 | 1989 |
| Developer / standard body | Igor Pavlov | PKWARE (Phil Katz) |
| MIME type | application/x-7z-compressed | application/zip |
| File extension | .7z | .zip |
| Compression | LZMA / LZMA2 (best ratio of common formats) | DEFLATE (typically) |
| Color / data depth | N/A | N/A |
| Max dimensions / size | 16 EB file size | 4 GB per file (ZIP64 extension lifts this) |
| Transparency | No | No |
| Animation | No | No |
| Standard / specification | 7-Zip (open) | PKWARE APPNOTE / IETF RFC 1951 |
| Best for | Maximum compression, typically 30–50% smaller than ZIP | Universal archives, opens natively on Windows, macOS, Linux |