Extract 7Z files online
7-Zip's format without 7-Zip — the archive opens on your own device, files listed and ready to download.
Drop your archive here
or
ZIP, RAR, 7Z — extracted on your device, no upload
🔒 Files never leave your device — everything runs in your browser.
7z is the power user's archive: better compression than ZIP, beloved for big backups and software bundles — and unreadable on a machine without 7-Zip installed. That is fine on your own PC and useless on a phone, a locked-down work laptop, or anyone else's computer.
This page opens 7z archives entirely in your browser using the same open-source engine that powers desktop extractors. Every file inside appears with its size and a download button, plus one button for everything at once. Nothing installs and nothing uploads — the archive and its contents stay on your device from first byte to last.
How it works
- Drop your file
Any common format, any size. Nothing is uploaded — the tool runs in your browser.
- Extract
Every file inside is listed with its own download — plus one button to grab them all. Nothing is uploaded.
- Download
Your converted file is ready on your device — nothing to wait for, nothing to delete from a server.
Frequently asked questions
Do I need 7-Zip installed to use this?
No — the extraction runs inside your browser on any device, phones and locked-down work machines included. It reads the format without any of the software.
Why do people use 7z instead of ZIP at all?
7z typically compresses noticeably smaller than ZIP, which matters for big backups and downloads. The trade-off is compatibility — exactly the gap this page closes when a 7z lands somewhere without the right software.
Can it open password-protected or split 7z archives?
No — encrypted archives get a clear message instead of a password prompt (a website should never collect your archive passwords), and multi-part archives (.7z.001) need their parts joined in a desktop tool first.
Is my file uploaded to a server?
No. ConvertUno runs entirely in your browser on your own device. Your file never leaves your computer or phone — there is no upload at all.
Is it really free, with no watermark?
Yes. Processing happens on your device, so serving you costs us almost nothing — no watermark, no account, no file-size limit, no daily quota.