Bulk M4B to WAVE Converter Online — Free HD Quality
Drag and drop your multiple M4B files into this free online M4B to WAVE converter (.m4b to .wave), and click the Convert button to bulk convert them to WAVE format in HD quality. Use the quality slider to fine-tune your WAVE output, then download your converted files one by one or as a single ZIP — your original M4B files are removed from our servers right after.
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PNG, JPG, WebP, GIF, HEIC, RAW, PSD, SVG and more
Max 100MB per file
M4B vs WAVE — File Format Comparison
| Feature | M4B | WAVE |
|---|---|---|
| File Extension | .m4b | .wave |
| MIME Type | audio/mp4 | audio/wav |
| Compression Type | Lossy | Lossless |
| Metadata Support | Yes | Yes |
What Is M4B Format?
MPEG-4 Audiobook — AAC audio in an MP4 container with bookmarking support, the standard format for audiobooks on Apple Books, Audible exports, and iPhone podcasts.
- Compression: Lossy
- Tags & Metadata: Supported
What Is WAVE Format?
Waveform Audio File Format (full name) — the .wave extension variant of WAV; functionally identical to .wav, uncompressed PCM audio recognised by all major operating systems and audio software.
- Compression: Lossless
- Tags & Metadata: Supported
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