Audiobook Converter Pro
Convert M4B audiobooks to MP3, AAC, or FLAC — chapters perfectly preserved
Your M4B audiobooks are stuck. They play in one app, on specific devices, and the moment you switch players you lose your chapters and progress.
Audiobook Converter Pro converts your M4B files to MP3, AAC, or FLAC — with every chapter perfectly preserved. Switch to any device, any app, any player. Your entire library, finally portable.
If a book has no embedded chapter markers, Audiobook Converter Pro can also infer chapter breaks from silence during interactive conversion, giving markerless audiobooks a reliable split-by-chapters path instead of forcing everything into one long file.
On Mac, 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.
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. 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 keeps repeat intake moving without manual re-importing and keeps markerless files safe by holding them for review instead of silence-scanning them unattended.
Chapter-Perfect Precision
Most converters flatten your audiobook into one long file and discard chapters entirely. Audiobook Converter Pro preserves every chapter marker from your original M4B — titles, timestamps, and order — so your MP3, AAC, or FLAC output behaves exactly like the original in any player that supports chapters.
Silence Detection for Markerless Books (Mac)
When an M4B file has no embedded chapter markers, Audiobook Converter Pro 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 pristine audio quality. Choose from multiple bitrate settings up to 320 kbps, or go lossless with FLAC output.
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
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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