Free · Private · No upload
Convert CAB to 7Z online
Drop your .cab file below and get a .7z archive in seconds — processed entirely on your device, free and private.
No upload
Your bytes never leave this device.
Instant
No queue, no account, no waiting.
Private by design
No tracking on any tool page.
How to convert CAB to 7Z
- 1
Add your .cab file — drop it into the tool or click to browse.
- 2
7Z is pre-selected as the output format; adjust compression options if you like.
- 3
Run the conversion and download the finished .7z archive.
About CAB and 7Z
CAB is Microsoft's cabinet archive format used in Windows installers and system updates.
7Z offers the best compression ratio of the family, with optional AES-256 encryption.
Why convert CAB to 7Z here?
- 100% private — conversion runs in your browser with WebAssembly; files never leave your device.
- Completely free — no sign-up, no watermarks, no per-file charges.
- Real re-packing, not renaming — the archive is unpacked and rebuilt as 7Z so the result opens cleanly.
Frequently asked questions
Will converting CAB to 7Z lose my files?
No. The contents are extracted from the CAB archive and re-packed into 7Z. File contents are not altered — only the container changes.
What if my CAB file is password-protected?
Enter the password in the options panel and the converter will decrypt it locally during the conversion.
Is there a file size limit?
There is no server limit because nothing is uploaded. Very large archives use your device's memory, so keep huge files reasonable.
Are my files uploaded to a server?
No. The conversion happens entirely inside your browser — your files never leave your device.