How to use it
- Drop your M4A files into the box above or click “Choose files”.
- Adjust the options if you need to.
- Click “Convert to MP3” and download the result.
About the format
M4A is an AAC audio file in an MP4 container, used by Apple devices. MP3 is the most compatible audio format and works on older players and car systems.
Frequently asked questions
Which audio quality should I choose?
192 kbps is a good default for music and voice. Choose 256–320 kbps for the best quality, or 128 kbps for the smallest files.
Does it work on a phone?
Yes, it works in modern mobile browsers. For long files a computer is faster.
Is it free?
Yes. All tools on ConvertNest are free to use, with no sign-up, limits on the number of files or watermarks.
Are my files uploaded anywhere?
No. The conversion runs entirely in your browser, on your own device. Your files are never sent to our server, which also makes it fast and safe for private documents.
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