Convert MP3 to M4A online
Convert MP3 files to M4A online
Want a compact audio file that fits well with Apple devices and many modern apps? This MP3 to M4A converter lets you convert MP3 to M4A quickly in your browser. It is a practical option for playback, sharing, and storage.
How it works
Upload the MP3
Choose the audio file you want as M4A.
Convert to M4A
The audio is encoded into an M4A-compatible format.
Download and test
Play it in your Apple or mobile workflow.
Frequently asked questions
About MP3 to M4A
MP3 to M4A converts audio into a format common on Apple devices and some mobile workflows. M4A usually contains AAC audio, which can be efficient for music, voice notes, and app delivery. The conversion does not improve an MP3. It re-encodes an already-compressed source, so use it when the target app requires M4A or when you want a file that fits an Apple-centered workflow. Keep the original MP3 and test the M4A on the device or app that needs it.
Updated June 2026: Added guidance for converting MP3 to M4A for Apple workflows, mobile libraries, AAC output, and quality expectations.