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M4A to MP3

Convert an M4A or AAC file to a widely compatible MP3, in your browser.

Select an audio file

Your M4A/AAC audio is decoded and re-encoded as a widely compatible MP3 — in your browser.

Click to choose, or drop a file here

How to M4A to MP3

  1. 1

    Add the M4A

    Drop in an M4A or AAC file — it's decoded in your browser.

  2. 2

    Choose a bitrate

    Pick the MP3 bitrate you want.

  3. 3

    Download the MP3

    Save the widely compatible MP3.

Related PDF tools

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M4A to MP3 — frequently asked questions

Does this work with iPhone voice memos?+

Yes — voice memos are M4A/AAC, which this decodes in your browser and re-encodes as MP3.

Is my file uploaded?+

No. Decoding and encoding both happen entirely on your device.

Will it play everywhere after converting?+

MP3 is the most universally supported audio format, so yes — anywhere M4A might be refused, the MP3 will play.

Any quality loss?+

Converting between two lossy formats adds a little loss. Pick 256–320 kbps to keep it minimal.

Do you upload my files to a server?+

No — every tool here processes your files entirely on your device, and nothing is uploaded to a server. The only exception is the AI tools, which send the extracted text (not the file) to Claude to do their work.

Is there a file size limit?+

There's no artificial limit we impose, but since processing happens in your browser, very large files (500+ MB or 1,000+ pages) are limited by your device's memory rather than by us.