Convert AAC to M4A
Fast, free AAC to M4A conversion — works in any browser
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aac
Advanced Audio Coding (AAC)
| File extension | .aac |
|---|---|
| File category | audio |
| Programs | Apple iTunes VLC media player Windows Media Player Winamp foobar2000 |
| Tech description | https://en.wikipedia.org/wiki/Advanced_Audio_Coding |
| MIME type | audio/aac |
| Developer | AT&T Bell Labs, Fraunhofer IIS, Dolby, Sony |
AAC (Advanced Audio Coding) is a lossy audio compression format standardized by the MPEG group in 1997, designed as the successor to MP3. At the same bitrate, AAC delivers noticeably better audio quality thanks to improved psychoacoustic modelling, support for up to 48 audio channels, and sampling frequencies from 8 to 96 kHz. AAC is the default audio format on Apple devices, iOS, iTunes, and YouTube. Files typically use the .aac or .m4a extension. Developed jointly by AT&T Bell Labs, Fraunhofer IIS, Dolby, and Sony, AAC is natively supported on Android, iOS, Windows, macOS, and most modern media players.
m4a
M4A — MPEG-4 Audio File
| File extension | .m4a |
|---|---|
| File category | audio |
| Programs | Apple iTunes VLC media player Windows Media Player foobar2000 Winamp |
| Tech description | https://en.wikipedia.org/wiki/M4A |
| MIME type | audio/mp4 audio/x-m4a |
| Developer | Apple Inc. |
M4A is an audio-only file container based on the MPEG-4 standard, introduced by Apple in 2004. The .m4a extension distinguishes audio-only files from .mp4 files that contain video. M4A files are most commonly encoded with the AAC codec, offering better audio quality than MP3 at the same file size. Lossless encoding using Apple Lossless (ALAC) is also possible within the M4A container. M4A is the default format for music purchased from the iTunes Store and Apple Music. It is natively supported on all Apple devices, and plays on Android, Windows, macOS, VLC, foobar2000, and Windows Media Player.
FAQ
How to convert M4A to AAC?
Upload your M4A file, select AAC as the output format, and click Convert. The converted file will be ready to download in seconds — no account or installation required.
How long does it take to convert M4A to AAC?
Most M4A files convert in seconds. Larger files may take up to a few minutes depending on size and internet speed. You can track the progress bar in real time during conversion.
Is it safe to convert M4A files online?
Yes. All uploaded M4A files and converted AAC results are automatically deleted from our servers within 1 hour after conversion. We do not store, share, or access your files.
Can I convert M4A on iPhone or Android?
Yes, our converter works on all devices and operating systems — iPhone, iPad, Android, Windows, and macOS. Open the site in your mobile browser, upload the M4A file and convert to AAC without installing any app.
