Convert audio to M4B (Audiobook). Apple's audiobook format (supporting bookmarks).
Drop audio here or click to upload
Supports MP3, WAV, OGG, M4A, etc.
Convert your audio files to high-quality M4B format instantly. Our tool supports various bitrates, sample rates, and even allows you to trim your audio before conversion.
Drag and drop your audio file into the upload zone above.
Go to the 'Quality' tab to adjust bitrate, sample rate, and channels.
Use the 'Trim' tab to cut out specific parts of the audio you don't need.
Toggle 'Enhance' to normalize volume or adjust gain.
Click 'Convert to M4B' to start the process.
Preview the output and click 'Download' to save your new file.
M4B output support with configurable bitrates
Advanced sample rate conversion (up to 48kHz)
Precision audio trimming and cutting
Stereo to Mono and 5.1 Surround support
Volume normalization (Broadcast standard EBU R128)
Live in-browser audio preview
High Quality: Professional-grade encoding for the best possible sound.
Space Efficient: Optimize file sizes for mobile and web usage.
Fast Workflow: Process files in seconds without complex software.
Privacy: Secure processing ensures your content remains yours.
Input:
RAW WAV Audio File (40MB)
Output:
M4B Variable Bitrate File (4MB)