Convert
Convert M4A to MP3
Free, in your browser, with no watermark and no signup. This produces an audio file, discarding any video track.
Why you have a M4A file
M4A is what Apple devices produce: voice memos, GarageBand bounces, audio pulled from Apple software. It is a perfectly good format that a surprising number of upload forms, older players and car stereos still refuse.
What the conversion actually does
The AAC audio inside the M4A is re-encoded to MP3, which is the closest thing audio has to a universal format.
Worth knowing first
AAC is actually the more efficient codec, so this is a compatibility conversion rather than an upgrade. Only do it when something specifically refuses M4A.
How to convert M4A to MP3
- 01
Add your M4A file
Drop it in, or pick it from your device. Free uploads go up to 1 GB per file.
- 02
Choose MP3
Pick the output format from the list. Queue several files of the same type to batch them.
- 03
Download
Watch progress live, then download the result. No watermark, on any plan.
Other conversions
Frequently asked
How do I convert M4A to MP3 for free?
Open the GrumpTools File Converter, add your M4A file, choose MP3 as the output and download the result. It runs in the browser, output is never watermarked, and free uploads go up to 1 GB per file.
Does converting M4A to MP3 reduce quality?
AAC is actually the more efficient codec, so this is a compatibility conversion rather than an upgrade. Only do it when something specifically refuses M4A.
Can I convert several M4A files at once?
Yes. Queue multiple files of the same type and convert them in one batch, then download them individually or all at once.