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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
M4A is an audio container that can carry AAC or Apple Lossless audio. WMA is a Windows-oriented audio format; check playback on other devices.
Quality and output
WMA is a Windows-oriented audio format; check playback on other devices. Quality changes depend on the input and output formats. A format change cannot restore information already lost.
How to use
- Upload a valid M4A file.
- Run the conversion to WMA.
- 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.