Convert m4a files to mp3

M4A file means MPEG-4 format audio file, which is similar like mp3 file, but has better sound quality and smaller file size.

MP3 stands for Motion Picture Experts Group Layer 3, which is a digital compression algorithm for audio file. The mp3 file can be over 10 times smaller when compared to a raw source file. Today, the MP3 file format is the most popular musical file formats in the world.

PowerISO can convert m4a files to mp3 format, thus can provide better compatibility with media player software or devices.

Please follow the steps to convert m4a files to mp3 with PowerISO.

Run PowerISO, and select "Tools > Audio converter..." Menu.
PowerISO Audio converter will popup. Click "Add files..." button to add the m4a files to the convert list. The "Add files" dialog will popup. Navigate to the folder containing the m4a files, select them, and click "Add" button to add the m4a files to convert list.

Output folder: You can put the converted mp3 files in the input folder, or put them to a separate folder specified.

Output format: The output format can be mp3, flac, ape, ogg, wma, or wav. Please select "MP3" for output format.
You can change the mp3 encoder settings by click "Settings..." button. In "MP3 encoder settings" dialog, you can change sample rates, sample mode, and sample format. The bit depth is 16 for mp3 encoding. Click "OK" to close the encoder settings dialog if all settings are correct.
Click "Convert" to start conversion after you have added the files and select the appropriate settings for the conversion.

PowerISO will start converting the m4a files to MP3 format. You can see the detailed progress information when converting.

You can cancel the conversion by clicking "Abort" button.

After all files have been converted, you can see the message, "Converting audio files completes successfully". It will also show the number of files converted successfully and the number of files failed to convert.