How to Convert ISO to 7Z? Complete Tutorial

  Amit Patra
Written By Amit Patra
Anuraag Singh
Approved By Anuraag Singh  
Modified On October 8th, 2025
Reading Time 5 Minutes Reading

Overview: ISO and 7Z are two of the most popular archive formats for saving and sharing large software or game installation files. But, there will be a time you wish to convert ISO to 7Z to compress & save device storage. In this comprehensive guide, we are going to talk about and discuss why people want this file conversion and how it can be done through manual solutions. Along with a professional method to simplify the process securely. But first things first, before we dive into the steps, let’s discuss both formats quickly:

Simply, ISO file is a complete image of all data including the file system and placed in one file that can be written on to a CD, DVD or Blu ray disc. It’s used to push OS images, software installs and recovery environments.

7Z (7-Zip Archive) is a compressed archive file format that supports several data compression, encryption and pre-processing algorithms. It applies the most advanced compression format to compress files in order to reduce size.

If you also want to work with other compressed files, then, this blog on how to convert ISO to ZIP will help too.

Why ISO to 7Z Conversion?

There are various reasons why users want to convert ISO to 7Z. Read the following points from below pointers:

  • In many cases, it compresses at a higher rate than ZIP files.
  • Especially, large software and system ISO files where you don’t like to.
  • It’s easier to upload, share or store smaller 7Z archives on cloud storage providers and external hard drives.
  • Easy to extract 7Z archives with a free tool like 7-Zip.
  • But it can’t do the same for ISO files or disc images.
  • You need to mount them as virtual drives.
  • 7Z supports encryption and password protection with the help of AES-256 algorithm.
  • Once you do it, your data will be more organized and easy to manage.

Convert ISO to 7Z Files Using Manual Methods

There are few free methods which you can try to export your desired ISO files into 7Z format.

#1. Export ISO to 7ZIP Through WinRAR

WinRAR is used to compress ZIP & RAR files. However, it can create 7Z archives in newer versions.

  • Right-click on the ISO file and select the Extract files option using WinRAR.
  • After that, select the folder through the extracted items.
  • Go to the limited selection area and choose Add to archive.
  • Select 7Z in Archive format when available.
  • Lastly, click OK to start converting.

Note: There are certain WinRAR releases that don’t output directly in 7Z format. If so, then use 7-Zip as it’s sure to get the job done.

#2. Use Command Line with 7-ZIP Files

If you feel comfortable with commands, 7-Zip has a command line interface that will convert ISO to 7Z:

1. Run the following command given below:

7z a -t7z “output.7z” “input.iso”

2. a – adds files to an archive

3. -t7z – Define the output format to be 7Z

4. “output.7z” – is the name of the 7Z archive.

5. “input.iso” – path to ISO image for converting

This is a good solution for batch processing or scripts.

Limitations of Using Manual Methods

Manual conversion with 7-Zip is possible, but has disadvantages:

  • Unless you use script, you can’t convert more than one ISO file.
  • Some complicated ISO images will not have a boot-info or metadata.
  • Converting multi-gigabyte ISO files may take hours and use a lot of CPU.
  • Manual processes do not have tracking of progress, customization of format or error handling.
  • CLI based commands may not be useful for non-technical ones.

Convert ISO to 7Z Securely – Professional Solution

If you work with large ISO files and often want to export them into 7Z or another file type, the SysTools ISO Converter Software is your smarter solution. One that doesn’t involve all of those manual steps. This is the robust software that prevents corruption, and saves your precious time. No more worrying about complicated steps or loss of data. It makes sure that your ISO file’s structure, folders and metadata are all kept intact while converting it to the format of your choice.

Change ISO to 7ZIP Format – Software Steps

1. Download & Install our ISO to 7Z converter on your PC.

step 1

2. To insert .iso files, press the Add File(s) button.

step 2

3. You can select more than one ISO at once. When you arrive at that folder, click on the Open button.

step 3

4. Just tap Next & it will quickly convert ISO to 7Z in a seconds.

step 4

5. Tool provide you several export options such as ISO, BIN/CUE, IMG, ZIP-ISO and 7Z-ISO.

step 5

6. Select the final path where you would like to store your data. Then hit the Convert button.

step 6

7. The selected file is converted into a ZIP. Just hit the OK.

step 7

8. And, if you want an even more in-depth report of this conversion, tap the “View Report”.

step 8

9. Now, navigate to the destination folder and you will find your Excel data there itself.

step 9

Final Verdict

You may encounter problems trying to convert ISO to 7Z with the wrong method. When fast and secure conversion is required, using an expert solution makes the difference. Free tools like WinRAR, command line can be useful for small tasks, but they tend to fail while dealing with large or multiple ISO files. Any time you need to compress, backup, copy or share your ISO files on Windows PCs, then this application makes the perfect conversion each and every time.

  Amit Patra

By Amit Patra

An adept expert with an extensive experience in solving a wide range of technical challenges. Passionate about emerging technologies, creating practical solutions, and simplifying complex concepts in layman's terms for users. Skilled in cybersecurity, data management, cloud platforms, and other domains, with proven expertise in providing user-focused content. His insights are a blend of hands-on experience, research and continuous learning.