M4B to WMA Converter
Convert M4B audio to genuine WMA for listening, editing, compatible media apps, and organised audio libraries. Download free.
Drop your M4B files here
Up to 500MB per file.
Conversion Settings
Files are encrypted and auto-deleted after conversion
How to Convert
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Upload your M4B files
Drag and drop or select M4B files from your device. You can upload multiple files at once.
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Configure Output
Choose an audio quality setting to balance sound quality and file size.
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Download WMA files
Once conversion finishes, download your files individually or as a compressed ZIP archive.
Why convert M4B to WMA?
M4B is an MPEG-4 audiobook format used by Apple Books and compatible spoken-word listening applications. Converting it to WMA creates a Microsoft audio format used by Windows software and older media libraries, ready for workflows that use the destination format.
WMA works best in Windows software; cross-platform players such as VLC also support it.
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Frequently Asked Questions
How do I convert M4B to WMA?
Add your M4B audio, choose your preferred audio quality, start the conversion, and download the completed WMA file.
Which M4B files can I convert?
This converter works with Apple Books audiobooks, spoken-word recordings, audiobook libraries, and compatible M4B files. Each supported recording becomes a ready-to-use WMA file.
What kind of WMA file is created?
The result is genuine WMA audio suited to audiobook chapters, spoken-word recordings, lectures, and listening libraries, compatible playback, editing, and organised media libraries.
Where can I use the converted WMA audio?
WMA works best in Windows software; cross-platform players such as VLC also support it.
Can I convert several M4B files together?
Yes. Add multiple M4B files, convert them in one batch, and download each completed WMA result separately.
Is M4B to WMA free and secure?
Yes. Files are transferred over an encrypted connection, processed securely, and automatically deleted shortly after conversion. No account is required.