(Update 2024) How to Convert DMG to ISO on Windows and Mac?

What is a .dmg file? DMG file is Apple Disk Image file commonly created and used by the MacOS X platform for applications distribution. DMG files can be loaded directly on an Apple Mac, but they are not so good on Windows computers.

ISO is also a Disk Image format. An ISO file, or sometimes referred as ISO image, is an exact copy of an entire optical disk such as a CD, DVD, or Blu-ray archived into a single file.

By comparison, ISO is a more universal format and can work across different operating systems. That’s why many users choose to convert DMG to ISO.

In the following, we’ll walk you through how to convert DMG to ISO using different free DMG to ISO converters.

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Two common methods are provided for Mac users to convert .dmg files to ISO.

Mac has a built-in feature called Disk Utility bundled with all versions of OS X and all Macs. It enables you to convert .dmg to .iso for free. Here are the steps:

Step 1. Double-click the DMG disk you want to convert.

Step 2. Open “Finder” and head to “Utilities” > “Disk Utility”.

Step 3. Select the DMG image and click “Convert”.

Step 4. Then select “DVD/CD mater” from the “Image Format” option list and click “Save”.

Step 5. Finally, locate the exported file and renamed it to a file with .iso extension.

In addition to Disk Utility, you can also choose to make the DMG-to-ISO conversion using the Terminal on MacOS. A simple tutorial is provided as below:

Step 1. Open “Finder”, navigate to the file folder where your DMG files are saved and choose Open in Terminal.

Step 2. Then execute the command:
hdiutil convert /path/imagefile.dmg -format UDTO -o /path/convertedimage.iso

Step 3. Be sure input the command and spaces correctly. Then press enter to start the conversion.

After that, rename the output with a .iso extension.

AnyBurn is lightweight but professional CD/DVD/Blu-ray burning software that provides a free and complete solution for burning and disc imaging. Previously, we talked about how to use Anyburn to achieve NRG to ISO and MDF to ISO conversion. Today, we’d like to guide you to convert .dmg to .iso with Anyburn.

Step 1: Firstly, you need to download the DMG to ISO converter from http://www.anyburn.com/.

Step 2: Launch Anyburn, and then click on Convert image file format on the right.

Step 3: Select the DMG file you want to import and set the ISO output directory.

Step 4: Click Convert Now to start to convert Mac DMG to ISO.

DMG2IMG is a small and lightweight application that allows you to convert DMG to ISO in Windows.

Step 1: Get this DMG to ISO converter via http://vu1tur.eu.org/tools/dmg2img-1.6.7-win32.zip.

Step 2: Once the file has been downloaded, open your Downloads folder and extract the contents (3 files) to a new folder.

Step 3: Now hold down Shift and right click the new folder, then select Open command window here from the context menu.

Step 4: Now use the following command syntax (remove brackets) to convert your DMG file:

dmg2img.exe (source file.dmg path) (destination file.iso path)

e.g.: dmg2img.exe C:\Users\WonderFox\Desktop\test\j-video-converter-for-intel-mac.dmg C:\Users\WonderFox\Desktop\converted.iso

Step 5: Finally, click Enter to start to convert .dmg to .iso.

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There are plenty of other tools that claim to help you convert DMG files, however, these two are the most reliable freeware I have come across. If you want, PowerISO, Any2ISO, MagicISO, UltraISO and more shareware are also worth trying. All in all, I hope you can easily convert DMG to ISO files after reading this tutorial.