Split Audiobook into Chapters
Divide large audiobooks or podcasts into separate chapters using timestamps. 100% free, private, and runs in your browser.
Accepts MP3, M4B, M4A, WAV. Large files (1GB+) are supported.
Why split an audiobook into chapters?
Sometimes when you buy an audiobook or download a public domain recording, it comes as one massive, 12-hour long MP3 file. Trying to find your place in a file that long is incredibly frustrating, especially if your phone battery dies or the app crashes and loses your spot.
By splitting the massive file into separate, individual MP3s for each chapter, you can easily load them onto an iPod, an old MP3 player, or simply organize them much better on your phone.
How to automatically split the file
Upload your giant audiobook MP3. Our tool will scan the entire file looking for long periods of silence, which usually indicate a break between chapters. It will drop markers at every single pause it finds.
You can listen to the preview at each marker to make sure it is actually a chapter break and not just a long dramatic pause in the reading. Once you confirm the markers are correct, click the split button and we will give you a neat zip file containing every chapter as its own track.
Frequently Asked Questions
How long does it take to process a 10 hour book?
Because all the processing runs locally on your computer instead of on a cloud server, it usually only takes a few minutes to scan and split a massive 10 hour file.
What if it splits the book in the middle of a sentence?
Our algorithm looks for absolute silence that lasts longer than 3 seconds. Since narrators never pause for 3 full seconds mid-sentence, the splits are incredibly accurate.
Can I manually move the split markers?
Yes. Before you hit export, you can see all the detected markers on a timeline and easily drag them left or right to fine-tune the exact chapter transition.