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M4B to WMA Converter
Convert M4B files to WMA in seconds, free and unlimited.
🔒 Files are processed on your device. Nothing is uploaded.
How to convert M4B to WMA
- Click Choose files or drop your M4B files into the box. You can add several at once.
- Make sure WMA is selected as the output format.
- Press Convert, then download your WMA files.
M4B
MPEG-4 audiobook format with chapter markers.
WMA
Windows Media Audio, Microsoft's compressed audio format.
Video and audio are converted with FFmpeg running inside your browser. Short clips finish in seconds; long or high-resolution videos can take a few minutes because your own device does the work. Open Options to trim, resize or change quality.
Other M4B conversions
- M4B to MP3
- M4B to WAV
- M4B to OGG
- M4B to OPUS
- M4B to FLAC
- M4B to AAC
- M4B to M4A
- M4B to M4R
- M4B to AC3
- M4B to AIFF
Convert other files to WMA
- MP4 to WMA
- WEBM to WMA
- MKV to WMA
- MOV to WMA
- AVI to WMA
- FLV to WMA
- WMV to WMA
- MPEG to WMA
- MPG to WMA
- M4V to WMA
- 3GP to WMA
- 3GPP to WMA
- 3G2 to WMA
- OGV to WMA
- TS to WMA
- MTS to WMA
- M2TS to WMA
- VOB to WMA
- MXF to WMA
- DV to WMA
- MOD to WMA
- RM to WMA
- RMVB to WMA
- MP3 to WMA
- WAV to WMA
- OGG to WMA
- OGA to WMA
- OPUS to WMA
- FLAC to WMA
- AAC to WMA
- M4A to WMA
- M4R to WMA
- AC3 to WMA
- AIFF to WMA
- AIF to WMA
- AIFC to WMA
- AMR to WMA
- AU to WMA
- CAF to WMA
- VOC to WMA
- WEBA to WMA
FAQ
Is converting M4B to WMA free?
Yes. Unlimited conversions, no sign-up, no watermark.
Are my files uploaded to a server?
No. FieldConvert processes files inside your browser, so your M4B files never leave your device. That makes it private and fast, because there is no upload or download wait.
Is there a file size limit?
Only your device's memory. Files up to about 2 GB work in most desktop browsers.