Audio Conversion
Convert WAV to M4B Online — Free
Fast, free WAV to M4B converter. No registration required.
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200万以上のファイル変換
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処理後にファイルを自動削除
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すぐに変換を開始
どこでも動作
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変換方法
1
Upload your .wav file by dragging it into the upload area or clicking to browse.
2
Choose your output settings. The default settings work great for most files.
3
Click Convert and download your .m4b file when it's ready.
WAVとは？
WAV is an uncompressed audio format developed by Microsoft and IBM. It provides perfect audio quality but results in large file sizes.
形式の詳細
- 正式名称
- Waveform Audio File Format
- 拡張子
- .wav
主な特徴
- Lossless quality
- Professional standard
- No compression
- Wide compatibility
M4Bとは？
M4B is the MPEG-4 audiobook format used by Apple iTunes and many audiobook platforms. It supports chapter markers, bookmarking, and AAC compression for efficient audiobook delivery.
形式の詳細
- 正式名称
- MPEG-4 Audiobook
- 拡張子
- .m4b
主な特徴
- Chapter support
- Bookmark resume
- iTunes compatible
- AAC compression
WAVとM4Bの比較
| 特徴 | WAV | M4B |
|---|---|---|
| 正式名称 | Waveform Audio File Format | MPEG-4 Audiobook |
| 拡張子 | .wav | .m4b |
| 最適な用途 | Lossless quality | Chapter support |
よくある質問
Converting between lossless formats preserves perfect quality. When converting to lossy formats, our optimized encoding minimizes any audible difference. You can adjust bitrate to control quality vs. file size.
We preserve ID3 tags, album art, and metadata when both WAV and M4B support them. Some metadata may not transfer between incompatible formats.
Pro users can batch convert multiple audio files simultaneously. Free users convert one file at a time with up to 5 free conversions per day.
We support all standard sample rates from 8kHz (voice) up to 192kHz (studio quality). The default preserves your source file's sample rate.
Yes. Our audio converter handles music, podcasts, voice memos, and audiobook files. For podcasts, we recommend MP3 at 128-192kbps for the best balance of quality and file size.