Drag files here
Choose from cloud
Local processing has no fixed file-size limit and depends on browser memory. Server limits: video 100 MB, other files 10 MB · Up to 5 files per batch
No registration · Free to useWhen to use this tool
MP3 offers broad player compatibility with lossy audio compression. M4A is an audio container; this converter writes AAC audio into it.
Quality and output
M4A is an audio container; this converter writes AAC audio into it. Quality changes depend on the input and output formats. A format change cannot restore information already lost.
How to use
- Upload a valid MP3 file.
- Run the conversion to M4A.
- Download the result and check it before replacing your original.
Before you download
Compare track duration and audio properties after conversion. Album artwork, chapter markers and every metadata tag are not guaranteed to survive a format change.