MP4 to M4A Converter

Extract high-quality M4A (AAC) audio from an MP4 - often near-lossless and smaller than MP3, all in your browser.

About this converter

MP4 to M4A extracts the audio from your video into an M4A file, which uses the AAC codec. Since MP4 usually already stores its audio as AAC, the audio can often be copied across with little or no quality loss - and M4A generally sounds better than MP3 at the same file size.

It is the best pick when you want compact audio that still sounds great, and you are mostly in the Apple ecosystem (iPhone, iTunes, Apple Music all handle M4A natively).

MP4 to M4A: good to know

Often near-lossless, because MP4 audio is already AAC and can be copied into M4A.
Better quality-per-megabyte than MP3 at the same size.
Plays natively across Apple devices; choose MP3 if you need maximum universal compatibility.

How it works

Drop your file(s) in the box above (or click to browse).
Make sure M4A is selected as the output.
Click Convert, then Download your file.

Frequently asked questions

How do I convert MP4 to M4A?

Drop your MP4 above, choose AAC (M4A) as the output, and click Convert, then Download. Only the audio is kept.

Is M4A better than MP3?

At the same file size, AAC (M4A) generally sounds better than MP3. MP3 still wins on universal compatibility with older or unusual players.

Is MP4 to M4A lossless?

It can be close. Because MP4 audio is usually already AAC, it can often be copied into an M4A with little to no additional loss.

Will M4A play on my iPhone?

Yes. M4A is native to Apple devices and apps like Music and iTunes, so it plays without any extra steps.

Are my files uploaded?

No. Extraction runs in your browser, so your audio and video stay on your device.

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