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ISO to 7Z converter, without the upload.

Turn ISO disc images into 7Z. It is converted in your browser, so the file never leaves your device.

Drop ISO files here

or choose from your computer paste with Ctrl V

Ready · other file types work too0 bytes uploaded, ever

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How to convert ISO to 7Z

  1. Add your ISO disc images

    Drop ISO 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.

  2. 7Z is already chosen

    Press Convert. There is nothing else to set. The work happens in this tab.

  3. Download

    Save the 7Z, or download everything as one ZIP if you converted several files.

Why ToAny

  • Private by construction

    The ISO to 7Z converter is part of this page and runs inside your browser. Your disc images are never sent to ToAny or to anyone else.

  • No upload, no queue

    Nothing has to travel to a server and back, so the conversion starts the moment you press Convert, even on a slow connection.

  • Free, without an account

    No sign-up, no email address and no watermark. Add several files and download them together as a ZIP.

ISO to 7Z: what to expect

ISO is a whole disc image, large and awkward to take single files from without mounting it. 7z usually compresses tighter than ZIP. ISO is at home in distributing operating systems and software on a disc image; 7Z is the usual choice for the smallest archives.

A password-protected archive is refused, since its contents cannot be read without the password. ISO 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.

ISO vs 7Z

ISO

ISO disc image

An ISO file is a complete copy of the data on a CD or DVD, in the ISO 9660 file system, often with UDF additions for larger discs. Linux installers and many software releases are distributed this way. Windows and macOS can mount an ISO as a virtual disc.

Opens in Windows 8 and later, macOS, Linux and 7-Zip (mounting or extracting)

ISO converter
7Z

7-Zip archive

7z 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
ISO compared with 7Z
ISOISO disc image7Z7-Zip archive
Stands forISO 9660 disc image7-Zip archive
TypeDisc imageCompressed archive
CompressionNoneLossless (LZMA / LZMA2)
Introduced1988, by the International Organization for Standardization1999, by Igor Pavlov
Opens inWindows 8 and later, macOS, Linux and 7-Zip (mounting or extracting)7-Zip, Keka, The Unarchiver, WinRAR; not built into older Windows or macOS
Best forDistributing operating systems and software on a disc imageThe smallest archives
File extension.iso.7z

Questions

Are my disc images uploaded anywhere?

No. The ISO to 7Z conversion runs inside your browser, on your own phone or computer. The file is not sent to ToAny or to anyone else.

Is anything lost when converting ISO to 7Z?

No. The files inside are repackaged unchanged.

Can I convert several ISO files at once?

Yes. Add as many as you like, convert them together and download each result or all of them as one ZIP.

How do I convert ISO to 7Z on Windows, Mac, iPhone or Android?

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 ISO file, press Convert and save the 7Z. There is nothing to install.

Is there a file size limit?

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.