How to Convert DMG to ISO in Windows

Apple Disk Image (DMG) is Apple’s proprietary compression format, widely used by Mac systems. It is similar to Windows’ EXE or ISO formats. The DMG format is used to create bootable MacOS discs and install applications. 

By default, Windows does not support DMG format. In contrast, DMG can be converted to ISO, which can be used by Windows to create bootable media, such as USB drives and CD/DVDs.

In this article we will discuss how to open DMG files in Windows and how to convert DMG files to ISO files to make their handling easier.  

How to Open DMG File in Windows

Since Windows does not natively support DMG files, the contents of such files can be read with third-party tools. These files can typically be accessed using compression or decompression tools, such as 7-zip. The following tools can be used to open DMG files:  

You will need to install the software on your computer to open DMG files. Upon installation, open the file by right-clicking it and selecting “Open with” from the sub-menu to open the DMG file with the installed tool.  

open with
Open DMG files using third-party tool

Alternatively, if accessing the content of the file is not sufficient, you can convert the file into an ISO image for use under Windows.  

How to Convert DMG Files to ISO on Windows

Here are some tools that can be used to extract DMG file content and convert DMG to ISO for easier handling in Windows.

DMG2IMG

DMG2IMG is a command-line tool that can be used to convert a DMG file to an ISO image. Follow the steps below to download, install, and use the tool:

  1. Open the DMG2IMG download page, scroll down, and click win32 binary under the dmg2img section to download it.
    download dmgtoiso
  2. Now extract the contents of the compressed folder by right-clicking on it, and then click Extract all from the context menu.
    extract
  3. Click Extract on the extraction wizard. This will extract the content from the new folder at the same location. You can also choose a different location by clicking Browse (optional).
    extract 2
  4. Once extracted, launch the Command Prompt with administrative privileges and enter the following command to navigate to the extracted folder from within the command line. Replace PathToExtracted with the actual path to where you have extracted the contents of DMGtoIMG.
    cd /d PathToExtracted
    cmd cd
  5. Now use the following command to convert a DMG file to an ISO image. Replace PathToDMG with the complete path to the source (DMG) file, and PathToISO with the complete path to where you want to save the converted (ISO) file.
    dmg2img PathToDMG.dmg PathToISO.iso
    dmg2iso cmd

The conversion process should not take more than a few seconds, depending upon your system’s performance. You will then find the ISO file at your designated location.

converted
DMG converted to ISO using DMG2IMG

ISO Workshop

ISO Workshop is another freeware with a Graphical User Interface (GUI) that you can use to convert a DMG file into an ISO image. Here is how:

  1. Open the ISO Workshop download page and click Download in front of the said software.
    iso workshop downoad
  2. Run the downloaded .exe setup file and follow through with the installation wizard to install the software.
  3. Now run the ISO Workshop software and click Convert ISO.
    convert iso workshop
  4. In the Convert Image window, click Browse under “Source image file” and then navigate to the DMG file that you want to convert and select it. Next, click the Convert button to begin the conversion process.
    browse convert

The image will now be converted and saved to the same location as the source (DMG) file by default.

BurnAware

BurnAware is another free-to-use tool to convert a DMG file into an ISO image. This tool comes in a free edition, a premium edition, and a professional edition, the latter 2 being paid versions. Follow the steps below to download, install, and then use the tool to convert a DMG file into an ISO image, so that it can be used as a regular ISO image on a Windows platform:

  1. Open the BurnAware download page and click Download under the free version.
    burnaware download
  2. Run the downloaded .exe setup file and follow through with the installation wizard to install the software.
  3. Now launch the BurnAware tool and then click Make ISO.
    make iso burnaware
  4. From the pop-up window, click the “+” sign from the top menu.
    plus sign
  5. From the next pop-up screen, navigate to the DMG file, select it, and then click Add.
    add
  6. Once added, click Close.
  7. Now, go back to the ISO Image window and click Make from the top menu.
    make
  8. The Save as window will now open. Navigate to the location where you want to save the converted ISO file, and also enter a name for it. Once done, click Save.
    name save

The tool will now begin converting the DMG file into an ISO, and the process should not take more than a few seconds. When finished, you should now find the converted ISO file at the designated location and then use it as you please.

ImgBurn

ImgBurn is another great tool that will convert a DMG file into an ISO file. Follow the steps below to download, install, and then use ImgBurn to convert the file:

  1. Open the ImgBurn download page, click on any of the mirror download links, and download the tool from there.
    mirror links
  2. Once the setup has been downloaded, double-click it to begin the installation process and then follow through with the installation wizard.
  3. Once installed, run the tool. From the main menu, click Write files/folders to disc.
    write files folders to discs
  4. On the next screen, click on the Browse for a file button.
    browse for file
  5. From the browsing window, navigate to and select the DMG file you want to convert.
  6. Now click Switch to image file output to create an ISO file out of the source file.
    switch to image file
  7. As you will now notice, the Build icon has changed. Click the Build button.
    build
  8. From the popup Save as window, navigate to the location where you want to save the converted ISO file, change its name (optional), and then click Save.
    optional
  9. You will now be notified that a volume label has not been given and the tool will set one itself. Click Yes.
    yes

The conversion process will now take place. Once converted, you will find the converted ISO file at the designated location.

converted 2
DMG converted to ISO using ImgBurn

Closing Words

Some tools and software we have mentioned in this post can do more than just convert. They can also be used to create a bootable drive directly from the software, using a DMG file. The bootable drive can then be used directly on a Windows PC.

Learn how to create a multiboot USB drive.

That said, we remind our viewers that just because you can access the content of a DMG file, or convert it to an ISO file, does not necessarily mean that the elements within the file will become compatible with Windows. Since DMG files are designed for MacOS, many software in DMG files will likely be incompatible with Windows.

Also see:

Subhan Zafar

Subhan holds a degree in Electrical Engineering and has completed several systems and network certifications including Huwaei, Cisco and Microsoft certs. He mostly researches and writes about the Windows world.