How to Convert DMG to ISO in Windows 10 for Free

Mac Operating Systems use DMG file as the disk image format. If you see a DMG file, which means it was specifically built for Mac Operating Systems. If you need to open and see the content or use that as an installation medium on Windows OS, then this guide will be useful to convert the DMG 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 to 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 does 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 dmg2img

2) 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 Windows

In the end, you will get a successfully converted ISO file from DMG file in Windows. This ISO can be used by 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.

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

Dinesh is the founder of Sysprobs and written more than 400 articles. Enthusiast in Microsoft and cloud technologies with more than 15 years of IT experience.

41 thoughts on “How to Convert DMG to ISO in Windows 10 for Free”

  1. i try to do this guide but in win.7 is dosent exist the run button in start menu. where i haft to type this:
    dmg2img and how to configure dmg2dmg in win.os

  2. in dos or like windows calls it command prompt in the programs list.
    if you cannot find it then click start and type cmd good luck!!!

  3. i have been trying to follow the steps mentioned many times but i have failed. one thing that i did before attemting this was that i changed the dmg file name it was a long name so i gave it a short name. help me plz i am stuck on this step on the way to mac osx lion. i already have snow leopard with me

    C:\mac>dmg2img snow.dmg snow.iso

    dmg2img v1.6.2 is derived from dmg2iso by vu1tur (

    snow.dmg –> snow.iso

    reading property list, 888454 bytes from address 3815701944 …

    opening partition 0 … ERROR: Inflation failed

  4. for you all having problems i’m willing to bet they’re mainly directory/location specific ones. you’re going to have to point the cmd prompt to the dmg program (ex. mine was on my desktop under another folder so in order to execute the command i had to type C:\Users\Desktop\hackintosh\dmg2img then pointed that to C:\Users\Desktop\os’s_iso’s\10.6\Mac OS X Install DVD.dmg C:\Users\Desktop\os’s_iso’s\10.6\osx.iso i made the output file name just simply osx.iso and worked flawlessly.

    • Dude see i have done all this…..u know this ends up with input file cannot be opened.
      I even tried dmgextractor.jnlp which created an iso file . But man that iso file after was just unable to open. FUCK :'(

  5. @exorcist you most likely have a bad dmg to begin with bro. Sorry to say but I’ve had it happen before too then when I find a clean copy it works like a charm. Try finding a fresh copy maybe.


  6. Sweeeet, this was the only program that worked for me. Thanks for the article, and major thanks to whoever wrote the software, you’re a life saver!

  7. Set up a directory as such C:\mac\convert. Place your source file *.dmg in the mac folder. Place your dmg2iso.exe file in the convert folder.
    Open an Administator Command Prompt and type: C:\mac\convert\dmg2iso C:\mac\*.dmg C:\mac\*.iso
    Voila, conversion will start.

    • An easier way to do this would be to put your .dmg file into a folder, and put all the dmg2img files in the same folder, open cmd and cd into that folder, and then run dmg2img whatever.dmg whatever.iso and it will work like a charm.

  8. you can just drag and drop with this program. just grab your .DMG and drop it onto dmg2iso.exe and just wait.
    by far the easiest way to convert dmg to iso

  9. Great tool! Thanks for posting the write up! Wish I found this before the other posts that let me down the wrong path wasting my time!

  10. i tried the syntax many times to convert galaxy on fire 2 mac os game….. but totally a failure….. the prog shows error msg…


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