M4A · AAC in MP4

AAC audio in an MP4 container. Apple's default; better than MP3 at the same bitrate.

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AAC audio in an MP4 container. Apple's default; better than MP3 at the same bitrate. Best for Apple devices and streaming.

At a glance

Category	Audio
MIME	audio/mp4
Extensions	.m4a, .aac
Compression	Lossy
Defined by	Apple / MPEG
Open	-

Convert from M4A (9)

M4A → MP4 M4A → WebM M4A → GIF M4A → MP3 M4A → WAV M4A → OGG M4A → Opus M4A → FLAC M4A → AIFF

Convert to M4A (19)

MP4 → M4A MOV → M4A WebM → M4A MKV → M4A AVI → M4A WMV → M4A FLV → M4A MPG → M4A 3GP → M4A TS → M4A OGV → M4A MP3 → M4A WAV → M4A FLAC → M4A OGG → M4A Opus → M4A AIFF → M4A WMA → M4A AMR → M4A

Comparisons

Questions

What is a M4A file?

AAC audio in an MP4 container. Apple's default; better than MP3 at the same bitrate. Best for Apple devices and streaming.

How do I open a .m4a file?

Drop it on this page: we read it in your browser and can convert it to MP4, WebM, GIF, MP3, WAV.

How do I convert a M4A?

Pick a target below: 9 conversions from M4A are available, all in your browser.