How to Convert Mac DMG File to ISO in Windows 10 for Free

Mac Operating Systems use DMG file as the disk image format. If you see a DMG file, that indicates it specifically built for Mac Operating Systems. If you need to open and see the content or use that as installation medium on Windows OS, then this guide will be useful to convert the DMG file to ISO for free on Windows 10 computer. Windows OS and most of the software do not support DMG files directly. Once it is converted to ISO file format, then it can be burned on CD or DVD in Windows OS. Even you can mount the ISO file in the virtual environment and use it.

Here, I will be showing how to convert the Mac DMG file to ISO on my Windows 10 computer. This method is applicable for older Windows versions such as 8.1 and Windows 7. I will use a small program called ‘dmg2img’ for this conversion. Dmg2iso is a free command line tool that did the job quickly and correctly. Power ISO is another solid tool but it is a paid application.

How to Convert Mac DMG to ISO in Windows? Follow the steps

1) Download dmg2img from the official site here. It has a 32-bit version only. You can still use it on your 64bit Windows 10.

download dmg2img2) Installation not required, just run the below command after extraction. You can use any unzipping tool to extract the file.  You must run the command from the same extracted folder which is having ‘dmg2img.exe’ file. Otherwise, you need to set up the path in Windows variables.

dmg2img < Source file.dmg> <destination file.iso>

3) The original conversion with correct file names starts as below.

Convert Mac dmg to iso in WindowsIn the end, you will get a successfully converted ISO file from DMG file in Windows. This ISO can be easily mounted using any mounting software or attached to VMware or VirtualBox as CD ROM drive. Also, it can be burned to physical CD or DVD. It becomes portable and accessible on most of the Windows and Linux Operating Systems.

Alternate to dmg2img for DGM File to ISO – Power ISO

Power ISO is a paid software which mainly built to CD/DVD image files conversion. It is easy to use as it has the graphical interface. If you regularly convert these type of files for production or testing environment, then you can consider Power ISO as the best option.

dmg to iso convert in Windows 10

You can visit their home page to find more information and download.

Some other GUI tools (with the graphical interface and mouse clicks) available, but they are not free. I find the dmg2img free tool does the job very well the converted ISO file worked in most of the software and Operating Systems most of the time.

40 thoughts on “How to Convert Mac DMG File to ISO in Windows 10 for Free”

    • That’s the main thing, man… So many articles, web sites and “instructions” and **NONE** of ’em are gonna tell us HOW to plug in a USB drive into the Mac and (re)install the macOS!? o.0

  1. I’m not super savvy with the command line so I had to look up a few things and also change my source’s filename, but I did get this to work. Thank you!

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