How to Convert IMG to ISO in Windows 10? (Attach to Virtualization Software)

IMG is another kind of file format like ISO. Software distribution and installation medium available in IMG file format. Also, it acts as the best way to dump or rip CD and DVD in Windows and Mac to archive them. In this guides, let me show how to convert IMG to ISO in Windows OS.

Technically, we do not need to convert IMG file in Windows 10 and latest server Operating Systems, because it can be mounted without any tools natively. But you may need to convert it to ISO in older versions such as Windows 7; also if you need to attach any OS (or bootable) IMG disk image files to virtualisation software such as VMware, VirtualBox and Hyper-V because some of the virtualization software may not read the IMG file like ISO.

Few Tools Claimed to Convert IMG to ISO


This is a proper ISO and disk management tool available to download. Though it has a free version to download and install, PowerISO can convert only up to 300MB data from IMG to ISO. If IMG file is the larger than 300MB then it is not going to work.



This is another free tool that possibly converts an IMG file to ISO, to be honest, I’m not sure whether it is working properly. Some people say it only change the file extension in the Windows OS platform. When I tried to convert a 4GB IMG file to ISO by this tool, it quickly converted the file, but guess what? I got only 350KB of the file as below.


Hence, I do not believe that this tool can do a good job.

The Free Tool Worked for me to Convert IMG to ISO in Windows OS

OSFMount is a free and lightweight tool I found that can do the job well. It is easy to install and convert the IMG file to ISO in Windows 10 or 8.1.

1) Visit this site and download the application.

2) Make sure you have the administrative privilege to install an app. Once it is installed properly, open OSFMount.

3) Mount the IMG file here. Browse and attach it as below. Click Next.


4) It will find the content and partitions inside this image file. Since we are not going to mount the specific partition, we will mount the entire image by selecting the 2nd option.


5) Mostly you do not need to change any settings in the next screen, Press the Mount


6) Once the file mounted inside OSFMount, right-click on the device and select “save to image”


7) Here you will find a few types of image formats. Select ISO as a file type and give a name.


8) The process of converting IMG to ISO will begin. Depending on the file size and the processing power of your computer, it may take some time.

A successful message will appear once it is converted properly. Comparing and matching the file size of the output and input files will give some idea of proper conversion. I got almost the same size of IMG file as ISO.

Now the converted ISO file can be easily mounted by any ISO mounting software or attach to virtual machines to use.

Stefan Richard is one of the folks who can't have a life without technology, especially Microsoft products. He has more than 12+ experience in Information technology. He worked as IT trainer, network/system administrator and IT Infrastructure manager. Stefan is the co-founder of HecticGeek.

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