How to convert M4A to MP3
- Choose or drop your M4A files. You can add several at once.
- Check that “To” is set to MP3.
- Press “Convert to MP3” and download the results — or all of them as one ZIP.
M4A vs MP3
M4A — MPEG-4 Audio. M4A is an audio file in an MP4 container, usually AAC-encoded. It is common for iPhone voice memos, iTunes downloads and many recorders.
MP3 — MPEG-1 Audio Layer III. MP3 is the universal compressed audio format. At 192 kbps it sounds close to the original for most listeners at about a tenth of the size of WAV.
Convert M4A to MP3 when you need a file for music libraries, podcasts and playing on any device. M4A is better suited to Apple devices and apps.
FAQ
5Are my files uploaded anywhere?
No. The conversion runs in your browser using your own device’s processor. Your files are never sent to a server, so nobody — including us — can see them. You can even disconnect from the internet after the page loads.
Will I lose quality?
Audio is encoded to MP3 at 192 kbps, which sounds the same as the original to most listeners.
Is there a file size or daily limit?
No limits, and no sign-up. Because nothing is uploaded, we don’t pay for your conversions and have no reason to cap them. Very large files are limited only by your device’s memory.
Can I convert many M4A files at once?
Yes. Add as many files as you like; each is converted to MP3, and “Download all” saves them together as a ZIP.
Does it work on iPhone and Android?
Yes. It works in any modern browser — Safari, Chrome, Firefox or Edge — on phones, tablets and computers. Older or low-memory phones may be slower with very large files.