Why convert M4A to MP3
M4A files sound great and are small, but MP3 is still the format everything understands: older car stereos, MP3 players, some Android apps, Windows tools, website upload forms, podcast hosts and phone systems. Converting makes sure the audio plays wherever you send it.
Common sources of M4A files:
- iPhone Voice Memos shared from the Voice Memos app
- Music bought on iTunes
- GarageBand and many podcast or recording apps
- Audio extracted from MP4 videos by other tools
How to use it
- Choose the MP3 quality. 192 kbps suits music; 128 kbps is plenty for voice.
- Choose your M4A files or drop them on the box above.
- Download each MP3, or all of them in one ZIP.
Voice memos
iPhone voice memos are M4A. To get them onto a computer, open a memo in Voice Memos, tap the ⋯ menu or the share button, and send it to Files, email or AirDrop. Then convert here. For speech, 128 kbps keeps files small with clear sound.
What changes
- Sample rate is set to 44.1 kHz.
- Channels: mono recordings stay mono; stereo stays stereo.
- Length stays the same.
- Tags such as title, artist and album art are not copied.
Protected files
Some files can’t be converted by any honest tool, because their encryption only allows playback in authorised apps:
- .m4p files: older iTunes purchases with DRM
- Apple Music downloads
- Audible audiobooks (.aa and .aax)
If you see an error with one of these, that’s the reason. Files you recorded yourself, and DRM-free purchases, convert normally.
Privacy
Voice memos and recordings are often private. Here they are decoded by your browser and encoded to MP3 with the LAME encoder, all on your own device. No audio is uploaded.
Questions
What is an M4A file?
M4A is audio, usually AAC, stored in an MPEG-4 container. Apple uses it for iTunes downloads, Voice Memos and GarageBand exports, and many Android recorders use it too.
Can I convert songs bought from iTunes?
Songs bought from the iTunes Store since 2009 are DRM-free M4A files and convert normally. Older protected files end in .m4p and can't be converted, and neither can Apple Music downloads, which are protected.
Will the MP3 lose quality?
M4A and MP3 are both lossy, so converting compresses the audio a second time. At 192 kbps or higher the difference is very hard to hear.
What about Apple Lossless files?
Apple Lossless (ALAC) files also use the .m4a extension. Support for decoding them varies by browser; Safari handles them most reliably.
Last reviewed 31 October 2026