Bulk WAVE to M4B Converter Online — Free HD Quality
Drag and drop your multiple WAVE files into this free online WAVE to M4B converter (.wave to .m4b), and click the Convert button to bulk convert them to M4B format in HD quality. Use the quality slider to fine-tune your M4B output, then download your converted files one by one or as a single ZIP — your original WAVE 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
WAVE vs M4B — File Format Comparison
| Feature | WAVE | M4B |
|---|---|---|
| File Extension | .wave | .m4b |
| MIME Type | audio/wav | audio/mp4 |
| Compression Type | Lossless | Lossy |
| Metadata Support | Yes | Yes |
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
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
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