mp3bat
M4A → MP3

Private by design

Convert M4A to MP3 without uploading a thing.

M4A is what iPhones, Apple Music, and Voice Memos produce, but some older players, car stereos, and apps only accept MP3. Converting makes the file play everywhere.

STAYS ON YOUR DEVICE
Drop an audio or video file, or click to choose
It opens here, in this tab — not on our servers.
WAV · M4A · AAC · OGG · FLAC · MP3 · MP4 · MOV · MKV · WEBM → MP3
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About M4A → MP3. M4A usually holds AAC audio, which is already compressed. Re-encoding to MP3 is a lossy-to-lossy step, so choose 256–320 kbps to avoid stacking up audible artifacts.

What is M4A?

M4A is an MPEG-4 audio container, typically holding AAC (and sometimes Apple Lossless). It's the default for Apple devices and many download stores, offering good quality at small sizes — but narrower device support than MP3.

How to convert M4A to MP3

  1. Drop your M4A file into the box above (or click to choose it).
  2. Pick a bitrate — 320 kbps for best quality, 192 kbps for a smaller file.
  3. Click Convert to MP3. It runs in this tab, on your device.
  4. Download your MP3. Nothing was ever uploaded.

FAQ

Why won't my M4A file play on some devices?

Plenty of older car stereos, MP3 players, and embedded systems only recognize MP3. M4A is newer and not universally supported, so converting to MP3 maximizes compatibility.

Does converting M4A to MP3 reduce quality?

M4A (AAC) is already compressed, so re-encoding to MP3 is lossy-to-lossy and can slightly degrade audio. Using 256–320 kbps keeps any loss below what most people can hear.

Can I convert iPhone Voice Memos this way?

Yes — export the memo as an .m4a file, drop it here, and convert. It all happens on your device, so nothing is uploaded.

Other conversions

New to this? See how the on-device conversion works, or the guide on choosing a bitrate.