Convert M4A to MP3
Turn M4A files — iPhone voice memos, iTunes music, recordings from a Mac — into MP3s that Windows, car stereos and every player accept. Nothing is uploaded.
- Processed on your device
- No upload, no waiting
- No signup, no watermark
How it works
Add your M4A
Drop in the file, straight from a voice memo export or a music folder. Its bitrate and channels are read immediately.
Choose the bitrate
128 kbps and mono for a spoken memo; 192 kbps or more for music. The estimated size updates as you choose.
Download the MP3
One file, named after the M4A, ready to send or play.
Frequently asked questions
How do I convert an iPhone voice memo?
Share the memo from the Voice Memos app — by AirDrop, email or Files — which gives you a .m4a. Drop that file here. Voice memos are mono AAC at a low bitrate already, so choose 128 kbps and mono and the MP3 will be very close to the original.
Why does Windows not play M4A?
Recent Windows versions usually do, but older ones, most car stereos, a lot of transcription software and plenty of upload forms still expect MP3. That is normally why people end up here: not because M4A is worse, but because something downstream refuses it.
Will this lose quality?
A little. M4A holds AAC, which is already compressed, so making an MP3 is a second lossy pass. Encoding at or above the M4A's own bitrate — shown on the page when you drop the file — keeps that loss small.
Can I convert a long recording — an interview or a lecture?
Yes, and hours are fine. The MP3 is written to the browser's own storage as it encodes rather than held in memory. For a spoken recording, 128 kbps mono gives a file small enough to email.
Does it work with Apple Music or iTunes purchases?
Only unprotected ones. Music bought long ago as .m4p, and anything from an Apple Music subscription, carries DRM that no browser tool can open — and stripping it is not something we will help with. Your own recordings and unprotected purchases convert normally.
Is my recording uploaded?
No. Voice memos are often personal; the file is decoded and re-encoded entirely by your own browser and never leaves your device.
Good to know: Every pass through a lossy encoder throws a little more away, and it never comes back. Converting between MP3, AAC, OGG and Opus is one such pass. If you are going to edit the sound, convert to WAV first, do the work, and encode once at the end. Protected purchases (.m4p, Apple Music downloads) cannot be opened. Chapters and artwork are not carried across.