Convert M4A to MP3
Turn your M4A audio (voice memos, iTunes) into MP3 compatible with everything, right in the browser.
Your files never leave your device
How to convert M4A to MP3
- 1
Upload the M4A
Voice memos, DRM-free iTunes music…
- 2
Convert
Re-encoded to high-quality MP3.
- 3
Download
Compatible with everything, even your car.
Why use this tool
Goodbye incompatibilities
MP3 plays on any player, website or device.
Voice memos
iPhone recordings (m4a) become a universal format.
Private
The file never leaves your device: ffmpeg runs in your browser.
Real engine
ffmpeg, the industry standard, compiled to WebAssembly and self-hosted.
Frequently asked questions
Does it work with DRM-protected music?
No: DRM-protected files (FairPlay) cannot be converted, and we do not try to bypass that protection.
Do I lose quality?
AAC→MP3 re-encoding loses a bit of theoretical quality; at ~190 kbps it is practically inaudible.
Why does the first conversion take a moment to start?
On first use the ffmpeg engine (about 32 MB) is downloaded from this same site; it stays cached afterwards. The conversion itself depends on video length and your hardware.
Is there a size limit?
The site-wide limit is 250 MB per file, and above 100 MB we warn it may be slow: everything is processed in your browser memory.