MP3 is the universal compressed audio format. It plays on every phone, car stereo and music app. M4A is AAC audio in an MP4 container, used by iTunes, Apple Music and many voice recorders. It sounds better than MP3 at the same size.
Converting to M4A gives you compact, high-quality audio that works perfectly on Apple devices. The conversion happens entirely in your browser, so your files are never uploaded and there’s no size limit beyond your device’s memory.
How to convert MP3 to M4A
- Choose your MP3 file.
- Pick the audio quality, and set a start and end time if you only need part of it.
- Press Convert and download the M4A.
Questions
Is MP3 to M4A conversion free?
Yes, completely free with no limits, sign-up or watermark.
Are my files uploaded?
No. Conversion runs on your own device, so your files stay private.