chdman comes bundled with the MAME emulator, but you can also find standalone download packages online.
Because it’s a command-line tool, you need to use it with either Command Prompt (CMD) in Windows or Terminal in macOS/Linux. If you’re not comfortable with typing commands, don't worry. The next sections will show you a few different methods, including simple drag-and-drop solutions and graphical user interfaces (GUIs) that do the heavy lifting for you.
Best for DVD-based games (PS2, Xbox, GameCube). It represents a single data track.
Drag and drop your .chd files directly into the software window. Choose your output folder destination. Click or Process to run the conversion visually. Method 3: Converting on macOS and Linux convert chd to iso
Click Convert, and Dolphin will create a standard ISO file. Method 3: Using CHDMAN (The Manual Command Line Method)
for /r %%i in (*.chd) do chdman extractdvd -i "%%i" -o "%%~ni.iso" pause Use code with caution. Copied to clipboard
This is the most critical nuance. CHD was originally designed for hard drives (CHD-HD) and later adapted for CDs/DVDs (CHD-CD). While modern chdman can extract both, some CHD files contain raw hard drive dumps that do not have an ISO9660 file system. chdman comes bundled with the MAME emulator, but
To convert a single game, you need to use your operating system's terminal. Move your .chd file into the same folder as chdman .
While chdman is technically designed to extract to a BIN/CUE format, you can force it to output an .iso file by specifying the extension in the command line.
Use the cd (change directory) command to go to the folder where you placed your .chd file and chdman.exe . The next sections will show you a few
Place chdman.exe , your batch_convert.bat file, and all your .chd games into the .
# Check file size chd_size = chd_path.stat().st_size iso_size = iso_path.stat().st_size
Create a new text file in the folder containing your CHD files and chdman.exe . Rename it to extract_all_chd_to_iso.bat . Edit the file and paste one of the following scripts.
No, this is normal. Decompressing a CHD file back to a raw ISO is a read-intensive operation. CHD files are compressed, and creating an ISO requires writing a significant amount of data to your hard drive. Conversion speeds depend heavily on the speed of your storage (SSD being much faster than an HDD) and the size of the game. Large PS2 or Wii games (4+ GB) will understandably take longer to process.
The toolkit includes several .bat files for different conversions. To convert a CHD file to ISO: