Web Tool

Audiobook Chapter Splitter

Easily split large audiobook files into individual chapter tracks for ACX, Audible, Spotify, and Findaway Voices—all entirely in your browser.

Why use this? Platforms like Audible (ACX), Spotify, and Google Books require you to upload your audiobook as individual files for each chapter.

This tool takes your single audiobook file, slices it up using your chapter list, and saves perfectly-named chapter files directly to your computer. Everything happens securely in your browser—no uploads required.

v1.1 — Updated Jul 2026 Browser-only · No uploads MP3 · WAV · M4A · FLAC · OGG Exports original format (MP3/WAV/etc.) Free forever
Audio File
Drop your audiobook here
MP3 · WAV · M4A · FLAC · OGG
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Chapter Markers
Paste Chapter List 0 chapters
Processing…
Export Log

Once processing begins, a log of saved chapters will appear here.

Split History

No split history yet.

Frequently Asked Questions

Is my audiobook uploaded to your servers?
No! Unlike other online tools, this tool is powered by a WebAssembly engine that runs 100% locally in your browser. Your audio files never leave your computer, ensuring absolute privacy for your unreleased books.
Will this reduce my audio quality?
Absolutely not. Our engine uses "stream-copying". Instead of decoding and re-encoding your audio (which destroys quality and takes forever), we cleanly slice the raw data. It is near-instant and preserves 100% of your original file's quality and bitrate.
Why are the downloaded files numbered? (01-, 02-, etc.)
Platforms like ACX (Audible), Findaway Voices, and Spotify require sequential numbering. Without these numbers, computer folders will sort your chapters alphabetically (putting "A Spirited Boy" before "Introduction"), ruining your book's playback order.
What formats are supported?
We currently support MP3, WAV, M4A, and M4B formats. The tool will automatically export your chapters in the exact same format you uploaded them in.

ACX Submission Checklist

When submitting your sliced chapters to Audible (ACX), make sure your original audio meets these retail requirements: