iso converter
← All converters

Free up to 100 MB

GCZ to ISO

Restore a compressed Dolphin GameCube or Wii disc image to ISO. Each stored block is checked before its contents are written.

GCZ
ToISO
Free up to 100 MB

Choose a disc image or drop it here.

Free up to 100 MB per source image.

How it works

Select your image

The header tells us which format and size to expect.

Generate the ISO

Your file size determines the price before processing starts.

Save your file

Download the ISO before closing the page. Allow space for the temporary file and download.

Using GCZ to ISO

GCZ to ISO restores the uncompressed disc data from a Dolphin image. GCZ records the expected size and a table locating its blocks. The converter checks the stored block data before writing the result, then confirms that the completed output matches the declared uncompressed size.

Is GCZ to ISO free to use?

GCZ to ISO reads the image on your device and writes a temporary ISO in browser storage. You do not need to register or upload the file. Keep the page open until the download is ready, and provide enough free space for both the working image and its saved copy.

Preserving the source image

GCZ to ISO cannot recreate information discarded when a disc was scrubbed before compression. Retain your original GCZ until the ISO opens in your intended emulator or utility. If a checksum fails, check that the source transfer completed successfully and retry with an undamaged file rather than changing its extension.