M4A to MP3 Converter
Convert iTunes and iPhone M4A/AAC recordings into MP3 files that play on any device, at up to 320 kbps.
Convert with this tool
or choose a file from your device — it is processed in this tab and never uploaded
Accepted: M4A, AAC, MP4 audio tracks, ALAC in M4A
Files stay on your device. There is no upload, no queue and no watermark, so a conversion works even with the network switched off after the page has loaded.
Supported formats & processing
| Accepted input | M4A, AAC, MP4 audio tracks, ALAC in M4A |
|---|---|
| Produced output | MP3 at 192, 256 or 320 kbps |
| Processing | Web Audio API + canvas + native JavaScript encoders |
| Upload required | No — the file is read locally and never transmitted |
How to use this tool
- Drop the .m4a file inVoice memos, iTunes purchases you own and your own exports all decode natively.
- Keep the default 320 kbpsWhen the source is AAC, encoding at the maximum rate adds the least possible second-generation loss.
- Leave channels on Keep originalM4A voice memos are often mono already, and the converter preserves that.
- ConvertDecoding is native and fast; encoding runs a few times faster than real time.
- Download the MP3The result plays in any browser, car stereo or phone.
About this tool
M4A is the MPEG-4 audio container that Apple uses for iTunes downloads, GarageBand exports, iPhone voice memos and Apple Music rips. It is efficient and sounds good, but plenty of older car stereos, MP3 players and presentation tools still refuse it. MP3 has no such problem.
This page decodes the AAC stream inside the M4A container with the browser's native decoder, then re-encodes it as MPEG-1 Layer III. The default 320 kbps keeps the second compression pass as transparent as the format allows, and the result card tells you the measured peak so you can be sure nothing clipped.
Features
- Native AAC decoding, so no engine download is needed
- 320 kbps default to minimise second-generation loss
- Handles mono voice memos and stereo music identically well
- Reports the applied sample rate when AAC rates are snapped for MP3
- Preview player before you download, so you can verify the result
- No account, no queue, no watermark and no file-size cap
Frequently asked questions
Will converting my iTunes purchase break DRM?
This tool converts files you already hold. Protected purchases from subscription services are encrypted, and no browser tool can or should remove that protection — if the file will not decode, it is protected and must be played through its licensed app.
Does 320 kbps give me better sound than the original AAC?
No. AAC at 256 kbps and MP3 at 320 kbps are broadly comparable in perceived quality; the extra bitrate simply keeps the re-encode from adding noticeable artefacts. The source quality still sets the ceiling.
Can I convert a whole album at once?
This page handles one file at a time so the settings stay clear. Repeat the process per track, or use the audio joiner when you want several tracks in a single file.
Why does the MP3 sound slightly different?
AAC and MP3 use different psychoacoustic models, so a second lossy pass changes the artefacts rather than the music. For critical material, convert from a lossless source instead.