Bulk WAV to M4B Converter Online — Free HD Quality
Drag and drop your multiple WAV files into this 100% free online WAV to M4B converter (.wav 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 — no signup and no downloads needed, and your original WAV files are removed from our servers right after. Also see:Export WAVE as FLAC.
Drop your WAV files here to convert to M4B, or click to browse
Converts .wav to M4B (.m4b) in HD quality — bulk, free, no signup
Choose FilesWAV vs M4B — File Format Comparison
See how WAV and M4B compare across file extension, MIME type, compression, and feature support. Related:How to convert WAV to APE?.
| Feature | WAV | M4B |
|---|---|---|
| File Extension | .wav | .m4b |
| MIME Type | audio/wav | audio/mp4 |
| Compression Type | Lossless | Lossy |
| Metadata Support | Yes | Yes |
What Is WAV Format?
Waveform Audio File Format — Microsoft and IBM's uncompressed PCM audio standard delivering bit-perfect quality for professional recording, mixing, and archival use.
- 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