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Free converter

MP3 to M4A

Anyfile converts an MP3 audio to an M4A audio for free, right in your browser: the file is never uploaded.

Files are converted in your browser and never uploaded. By using Anyfile you agree to the Terms of Use.

What changes from MP3 to M4A

Sound qualityNo further loss (what MP3 already left out doesn’t come back)
Tags and cover artTitle, artist, album and cover carried over where M4A holds them; lyrics and some rarer tags aren’t yet
File sizeUsually smaller: M4A compresses more tightly than MP3

When to use M4A: Music on Apple devices, iPhone voice memos and ringtone sources.

Options

Open the file in the audio editor to choose before downloading:

  • Bit depth: 16 or 24-bit

The two formats

.mp3

MP3 audioMPEG-1 Audio Layer III

A lossy audio format from the MPEG-1 standard, largely developed at Germany’s Fraunhofer Institute in the early 1990s. It shrinks music by dropping sounds people are least likely to hear.

Music libraries, podcasts and audio that has to play on almost any device.

Opens in every phone, computer, browser and car stereo

About MP3 files

.m4a

M4A audioMPEG-4 Audio

An MPEG-4 file that holds only audio, usually AAC and sometimes Apple Lossless (ALAC). Apple popularised it for songs bought and ripped in iTunes.

Music on Apple devices, iPhone voice memos and ringtone sources.

Opens in Music, QuickTime, iPhone, Windows Media Player, VLC

About M4A files

Questions

How do I convert MP3 to M4A?

Drop your MP3 file on this page, or choose it. Anyfile converts it on your device in a moment and the M4A downloads straight away. To change it first, open it in the audio editor.

Is my MP3 file uploaded anywhere?

No. The file is read and converted by your own browser, and nothing is sent to a server. You can check: open your browser’s developer tools, go to Network, and convert a file. No upload appears.

Will I lose quality?

M4A is a compressed format, and Anyfile saves at high quality, so the difference is very hard to notice.

Can I convert several MP3 files at once?

Yes. Drop them together and you get one ZIP with every M4A inside.