Convert ISO to 7Z
Convert ISO archives to 7Z in one step: the archive is extracted and re-packed inside your browser. 7Z gives the smallest file size and strong AES-256 encryption.
- No upload — 100% private
- Fast, lossless when possible
- Free & unlimited
- Works on iPhone & Android
Keep this tab open — 7-Zip is running on your device, nothing is uploaded.
How to convert ISO to 7Z
- 1
Tap Choose archive and pick your ISO file.
- 2
Check that 7Z is selected and choose the compression level.
- 3
Press Convert archive. Enter the password if the original is protected.
- 4
The 7Z downloads automatically.
ISO vs 7Z
| ISO | 7Z | |
|---|---|---|
| Full name | ISO disc image | 7-Zip archive |
| Can create here | Extract only | Yes |
| Developed by | ISO 9660 | Igor Pavlov |
| Introduced | 1988 | 1999 |
| Opens on iPhone | ✕ Needs an app (or this site) | ✕ Needs an app (or this site) |
| Opens on Android | ✕ Needs an app (or this site) | ✕ Needs an app (or this site) |
| Opens on Windows | ✓ Built in | ◐ Newer versions only |
| Opens on Mac | ✓ Built in | ✕ Needs an app (or this site) |
ISO: ISO is an exact image of a CD, DVD or USB installer. You can open it here to copy individual files out without burning or mounting it.
7Z: 7Z is the 7-Zip archive format. Its LZMA2 compression usually makes files 10–40% smaller than ZIP, and it supports strong AES-256 encryption including encrypted file names.
Frequently asked questions
Will my files change when converting ISO to 7Z?
My ISO is password-protected — can I convert it?
Is there a size limit?
Are my files uploaded?
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