MP4 to M4A Converter

About this converter

EasyConvert turns MP4 files (the most widely supported video format - it plays on phones, TVs, browsers, and editing software) into M4A (AAC audio in an MP4 shell, great quality at small sizes). This extracts the audio track from your video - handy for saving music, podcasts, lectures, or voice memos from video recordings. Unlike traditional online converters, nothing is uploaded to a server: the conversion runs on your own device using WebAssembly. That means no waiting for uploads, no privacy worries, and it works even on large files.

How it works

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

Frequently asked questions

How do I convert MP4 to M4A?

Drop your MP4 file in the box above, choose M4A as the output format, and click Convert. When it finishes, click Download. Nothing is installed and nothing is uploaded.

Is it really private?

Yes. The converter runs entirely in your browser using WebAssembly (ffmpeg.wasm). Your file never leaves your computer - we could not see it even if we wanted to.

Is it free?

Yes - up to 5 conversions per day with files up to 1 GB. EasyConvert Pro ($5/month) removes both limits.