Convert AAC to M4A in bulk.
Large AAC files are supported.

Max size: 200 MB per file

You can convert AAC Learn more about AAC files to


How to convert AAC to M4A?

You can convert AAC to M4A with MConverter in three easy steps:
  1. Choose AAC files from your device
    At the top of this page, drag and drop your AACs.
    You can also click to select AAC files using your operating system's file picker.
    Another method is to press the keyboard shortcut Ctrl+V (⌘+V on Mac) to paste an AAC file you have copied to clipboard.
    Converting a folder with AAC files to M4A is also supported: simply paste or drag and drop it.
  2. Click or tap on M4A from the list of target formats
    Alternatively, you can use the search field to quickly find the format you need, whether it's M4A or something else.
  3. Download your M4A files, after MConverter has finished processing them
    There's an option to automatically download the converted M4A files, so you don't have to press the download icon for each M4A.
    You may see a share icon as well. Use it to directly share the M4As with other apps.

About the formats

Extension aac
Category Audio file formats
Developed by Fraunhofer Institute, Nokia, Dolby, AT&T, Sony and others
Mime type audio/aac


AAC files are audio files using Advanced Audio Coding compression. AAC is a lossy format, meaning the audio quality remains almost the same as the original source. The slight loss leads to the audio files taking up less space, which makes them ideal for music streaming or when bandwidth is limited. AAC is superior to MP3 for handling frequencies above 16 kHz. The encoding efficiency for transient and stationary signals is also better when compared to MP3.
Extension m4a
Category Audio file formats
Developed by Apple
Mime type audio/m4a


M4A files store audio using the AAC codec. M4A stands for MPEG-4 Audio. It is very similar to MP4 with the difference being the lack of a video/subtitle track in the file.

Common questions about converting AAC to M4A

Can I convert AAC to M4A in bulk?

Yes, MConverter supports batch converting of multiple AACs to M4As simultaneously. You can even drag and drop folders containing AACs to convert to M4A.
Pasting AAC files and folders copied in the clipboard also works: use Ctrl+V.

Can I convert an AAC file to M4A, if its size is 1 GB?

Yes, with MConverter Premium you can convert big AACs, up to 1 gigabyte each.
The free version lets you convert files up to 200 MB. If you need to convert AAC files over 200 megabytes, try MConverter Premium.

Is converting AACs to M4A safe with MConverter?

Yes, we encrypt your connection using industry standards. Plus, your AAC files are only accessible by you. 24 hours after the conversion completes, they are automatically deleted from MConverter’s servers. You can also delete your AACs and other converted files immediately after finishing the conversion by clicking the bin icon.
Join others who have trusted us to convert over 2,857,206 files so far.

How long does it take to convert AAC to M4A?

For most audio files, the wait is usually around a minute. However, MConverter also supports converting larger audio files, meaning that it could take a while (up to over an hour, for example).

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