Turn CPIO archives into 7Z. It is converted in your browser, so the file never leaves your device.
Drop CPIO files here
or choose from your computer paste with Ctrl V
from Photos or Files
Ready · other file types work too0 bytes uploaded, ever
Drop CPIO files onto the box above, or click it to choose them. ToAny reads the file's contents to detect the type, so a wrong extension does not matter.
Press Convert. There is nothing else to set. The work happens in this tab.
Save the 7Z, or download everything as one ZIP if you converted several files.
The CPIO to 7Z converter is part of this page and runs inside your browser. Your archives are never sent to ToAny or to anyone else.
Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.
No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.
CPIO is unfamiliar outside Unix, and several slightly different variants exist. 7z usually compresses tighter than ZIP. CPIO is at home in linux boot images and package payloads; 7Z is the usual choice for the smallest archives.
A password-protected archive is refused, since its contents cannot be read without the password. CPIO files are read, not installed or mounted: every file inside is unpacked and repacked into the 7Z, so nothing of the system image or installer is run.
cpio is a Unix archive format older than TAR in common use. It stores files and their permissions without compressing them. The initial RAM disk a Linux system boots from is a (compressed) cpio archive, and RPM packages carry their files in one.
Opens in Linux and macOS Terminal, 7-Zip
CPIO converter7z is the format of the open-source 7-Zip tool. It usually compresses noticeably better than ZIP, at the cost of needing an extra app on many computers.
Opens in 7-Zip, Keka, The Unarchiver, WinRAR; not built into older Windows or macOS
7Z converter| CPIOCPIO archive | 7Z7-Zip archive | |
|---|---|---|
| Stands for | copy in, copy out | 7-Zip archive |
| Type | Archive (no compression) | Compressed archive |
| Compression | None | Lossless (LZMA / LZMA2) |
| Introduced | 1977, by Bell Labs (PWB/UNIX) | 1999, by Igor Pavlov |
| Opens in | Linux and macOS Terminal, 7-Zip | 7-Zip, Keka, The Unarchiver, WinRAR; not built into older Windows or macOS |
| Best for | Linux boot images and package payloads | The smallest archives |
| File extension | .cpio | .7z |
No. The CPIO to 7Z conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.
No. The files inside are repackaged unchanged.
Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.
The steps are the same everywhere because ToAny runs in the web browser: open this page in a current version of Chrome, Edge, Safari or Firefox, add the CPIO file, press Convert and save the 7Z. There is nothing to install.
Yes. An archive can be up to 500 MB, unpack to at most 1 GB and hold up to 50,000 files; beyond those limits the page says so. Beyond that the limit is your device's memory, since nothing is uploaded; a computer copes with large files better than a phone.