Free online RVZ to ISO converter

An ISO may be required by disc-imaging, archival, or Wii-related software that does not support Dolphin’s compressed RVZ format. Converting it expands the image into an ISO-compatible file; it does not restore data that was removed when the RVZ was created.

What the RVZ format is

RVZ is Dolphin Emulator’s compressed disc-image format for Nintendo GameCube and Wii games. It uses compression such as Zstandard and can omit unused or redundant disc data, substantially reducing storage requirements while retaining the data normally needed for emulation.

RVZ files are mainly used by Dolphin users who have created legal backups of their own discs, want smaller archives, or want to store a game library for direct use in the emulator. An RVZ is not a generic optical-disc image format, so many disc tools and emulators cannot open it.

What the ISO format is

ISO is a widely supported single-file disc image. ISO files are accepted by many emulators, disc-image utilities, archival applications, and operating systems, although support for Nintendo GameCube and Wii images varies by program.

Compared with RVZ, an ISO is normally much larger because it does not use RVZ’s compression. A converted Wii image can occupy several gigabytes, and a dual-layer image requires substantially more space. An ISO made from a GameCube or Wii image remains subject to that platform’s region, encryption, and software-compatibility requirements; changing the filename extension does not make it a universal disc image.

How to convert RVZ to ISO

Dolphin Emulator is the most reliable desktop method because it reads RVZ natively and understands the GameCube and Wii image structure.

1. Install a current Dolphin release from the official Dolphin distribution source.
2. Open Dolphin and choose Tools → Convert File.
3. Select the .rvz file as the input.
4. Choose ISO as the output format, select a destination with enough free space, and start the conversion.
5. Wait for the process to finish. The output normally has an .iso extension.

If the file is not visible in Dolphin’s game list, adding its containing folder through Config → Paths can make it available, but the Tools → Convert File command can generally select an input directly. Menu labels can differ between Dolphin releases.

Some Dolphin distributions also include the command-line utility dolphin-tool. Where available, a typical command is:

dolphin-tool convert -i "game.rvz" -o "game.iso"

Use full paths when the files are in different directories and check dolphin-tool --help if the installed version uses different options. Keep the source RVZ until the ISO has been tested.

Using 101convert

You can convert the file on 101convert.com for free without installing software: upload the RVZ file, select ISO as the output, start the conversion, and download the result. Large game images may exceed current upload or processing limits, and uploading a private or copyrighted image may be inappropriate unless you have the necessary rights and accept the site’s handling of the file.

Quality and compatibility limits

For a normally created RVZ, conversion to ISO is decompression rather than a re-encoding step, so it does not add generation loss. However, RVZ creation may have removed unused sectors or other data. The resulting ISO cannot restore anything that was discarded before compression, so it may not be a byte-for-byte reproduction of the original physical-disc dump.

The ISO will usually be much larger than the RVZ. Keep the RVZ if storage efficiency matters; converting the ISO back to RVZ is needed to regain comparable compression. For archival or troubleshooting use, verify that the ISO opens in Dolphin and compare a checksum when an expected checksum is available.