This tool converts AAC to M4A completely free and without any functional limitations. Since it is based on the browser API, the processing speed is the fastest because all files are processed locally on your device and are not uploaded to our server.
Batch Convert AAC to M4A Online
With this SoConvert tool, you can convert multiple AAC files to M4A directly in your browser for free. You can also adjust the audio Bitrate during conversion.
Click the Options button in the top-right corner to open the settings panel, where you can customize the output M4A audio Bitrate.
Other Settings Explained:
Encoding Speed: Choose the encoding speed. Faster speeds result in larger file sizes.
Audio Bitrate: Recommended range is 8 – 320 Kbps.
Cut Audio: Trim the audio using a start and end time in HH:MM:SS format.
For example, setting 00:00:05 to 00:00:08 will cut a 3-second clip from the audio.
Before converting, you can choose a local folder to save the converted M4A files. Once an AAC file is successfully converted, it will be automatically saved to your selected directory—no manual download required.
Save All: After all AAC files are converted, click “Save All” to export every M4A file to your chosen folder in one go.
About AAC files
AAC (Advanced Audio Coding) is a highly efficient audio compression format developed by Fraunhofer IIS, AT&T, Dolby, and others. It delivers better sound quality than MP3 at similar bitrates, making it ideal for music streaming, podcasts, and mobile devices. AAC is the default audio format for Apple products (iTunes, iPods, iPhones) and is widely supported across platforms. Its lossy compression reduces file sizes significantly while maintaining excellent audio fidelity, though it's not as universally compatible as MP3.
About M4A files
M4A (MPEG-4 Audio) is a high-quality audio format developed by Apple, based on the AAC (Advanced Audio Coding) standard. It offers better sound compression than MP3 while maintaining excellent audio quality, making it ideal for music and podcasts. M4A files are often used in iTunes and Apple devices, supporting lossy compression with smaller file sizes than MP3 at similar quality levels. Though less universal than MP3, it is widely supported on modern devices and media players.
