This should seo much higher took me ages to find this thread saved me a massive headache

Fwiw, I googled "Can I convert gamecube .iso to .rvz" and this was the first hit.

Good news from the future. This thread was my first result.

Since this is apparently now one of the top-listed results on internet search engines when searching how to convert RVZ to ISO, I felt it appropriate to re-post my reply as a stand-alone comment so that it can found more easily rather than being slightly buried.

2024-06-14 EDIT: Remember that you can directly play RVZ files in Dolphin without needing to convert them, so the following process is only required if you're trying to play on real hardware since RVZ is not supported in any of the loaders on Wii／Wii U as of this edit.

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In recent versions of Dolphin (anything made in the last couple of years; not the old 5.0 version), click the "Config" button, then the "Paths" tab. Click "Add..." and locate the folder where the game in question is located. After clicking "Select Folder", you may also want to optionally enable "Search Subfolders", but regardless then click "Close".

Note that Dolphin can't read ZIP／RAR／7z archives or the like.

Back on the main Dolphin program window, it should now show the game(s) in question (if it doesn't, click the "Refresh" button). Right click the desired game and select "Convert File..." If it was in RVZ format then it should default to "ISO" in which case just click "convert", select wherever you want to save it to, and that's it.

Thank you so much! You're a lifesaver

This will batch convert RVZ files to ISO. Put this text in a .BAT file in the same folder as the RVZ files, adjust the path and run it:

for %%f in (*.rvz) do ("C:\path\to\DolphinTool.exe" convert -i "%%f" -o "%%~nf.iso" -f iso -s)

These are native to Dolphin (at least, right now). You'll have to load your files into that and convert back to ISO.

I see, so how do I convert them to isos using dolphin? I'm able to boot up the files no problem but I don't see how to convert them

I'm trying to convert on an NTFS external drive but it hangs when it reaches 4GB size ..

The instructions on that link are misleading as RVZ files cannot in fact be extracted using 7zip or WinRAR—to quote that article:

WinRAR or 7-Zip: to extract the contents of the RVZ file.

Open WinRAR or 7-Zip and extract the contents of the RVZ file.

This is not the correct process and trying to do this will result in a bad time.

My games aren't even showing up in Dolphin. The folders the games are in are there but there are no games in it when you open them. Then I get the prompt "dolphin could not find any GameCube/Wii ISOs or WADs".