Audiobook Converter Pro
Convert DRM-free M4B audiobooks while keeping valid chapter information
Your M4B audiobooks can be awkward to use outside the player or device they were prepared for. Changing players may also make their chapter structure less convenient to navigate.
Audiobook Converter Pro converts DRM-free M4B files to MP3, AAC, or FLAC while preserving valid embedded chapter markers, titles, timestamps, and metadata. The resulting files work with a wider range of players and devices, making your library easier to carry between listening setups.
If a book has no embedded chapter markers, Audiobook Converter Pro can also infer likely chapter breaks from silence during interactive conversion, giving markerless audiobooks a practical split-by-chapters path instead of forcing everything into one long file.
On Mac and Windows, Watch Folder turns repeat conversion into an intake pipeline. Point the app at a folder, choose queue-only review or automatic conversion, and let new M4B files get picked up while the app is running.
Pro features unlock batch conversion, parallel processing, recursive folder scanning, Watch Folder automation, and flexible naming templates like {Album}/{TrackPadded}-{ChapterTitle} to organise your library exactly how you want it.
Windows users can now start free with Audiobook Converter Pro Flex. Flex includes a useful Free tier with optional Full Pro Monthly or Lifetime upgrades. If you prefer a traditional one-time purchase, the existing Audiobook Converter Pro lifetime edition remains available separately.
Available for Mac and Windows. Everything runs locally — no uploads, no accounts.
Screenshots
See it in action
Features
Watch Folder Automation
This is a signature workflow for larger audiobook libraries on both Mac and Windows. Set a folder once, choose queue-only review or automatic conversion, and let Audiobook Converter Pro pick up new M4B files as they arrive. Watch Folder avoids unattended silence inference for markerless split workflows; those files are routed through conservative review or single-file handling rather than having chapter boundaries silently guessed in the background.
Chapter-Perfect Precision
Some converters flatten an audiobook into one long file and discard its chapter structure. Audiobook Converter Pro carries valid embedded chapter information from the original M4B — including titles, timestamps, and order — into supported output workflows so the result remains easier to navigate in compatible players.
Silence Detection for Markerless Books
On Mac and Windows, when an M4B file has no embedded chapter markers, interactive conversion can infer chapter breaks from long silences so you can still split the audiobook into usable chapters.
Blazing Fast Conversions
Optimised conversion engine gets your audiobooks ready in record time. Full Pro unlocks parallel M4B and chapter processing — convert multiple files and chapters simultaneously.
Crystal Clear Quality
Convert to MP3, AAC, or FLAC with control over the output. Choose from multiple bitrate settings up to 320 kbps, or export to FLAC without introducing another lossy compression stage. FLAC cannot restore quality already absent from the source.
Multi-File & Batch Processing
Full Pro: queue entire collections for conversion. Recursively scan folders to find and convert every M4B file in your library automatically. Choose your own output folder.
Advanced Editing & Naming Templates
Pro feature: edit filenames using metadata — title, artist, album. Apply flexible naming templates like {Album}/{TrackPadded}-{ChapterTitle} to organise your library exactly how you want it.
Intuitive Interface
Drag-and-drop your M4B files, select your output format, and convert. Designed for simplicity — even advanced Pro features are a single click away.
Retro-Inspired Design
A clean, focused interface with a distinctive retro colour palette that makes audiobook management a pleasure rather than a chore.
Privacy First
Everything runs locally on your device. No uploads, no cloud processing, no account required. Your audiobook library stays entirely under your control.
System Requirements
macOS
macOS 12.0 or later
Windows
Windows 10 or later
📚 Learn How to Use Audiobook Converter Pro
Convert M4B to MP3 on Windows
Compare free and automated ways to convert DRM-free M4B audiobooks to MP3 on Windows.
Convert M4B Without Losing Chapters
Understand chapter-preserving conversion and the difference between embedded chapters and separate MP3 files.
Split M4B into MP3 Chapters
Turn one long M4B audiobook into organised individual MP3 chapter files.
Browse All Guides & Tips →
Discover more tutorials and tips
User Reviews
See what users love about Audiobook Converter Pro
1 review
5-Star Review
Totally worth it
“The app is perfect for converting my audiobooks to play on any device.”
MoZZoro
Sep 28, 2025
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