Split a lecture by topic
Paste timestamps from your notes and export each topic as a separate audio file.
Result preview: A long class recording becomes named topic clips that match the user's notes and are easier to replay before an exam.
Audio Chapter Splitter
Split long recordings by chapter timestamps.
Local processing · your file stays on your device
QUICK CHAPTERS
Create chapter starts
Start with equal sections, then fine-tune a chapter at the exact playback position.
or fine-tune manually
Use m:ss or h:mm:ss. Seconds must be 00–59, so write 1:15 instead of 0:75.
Each chapter downloads separately. Your browser may ask for permission to download multiple files. If you are unsure where to cut, review the one long recording guide before exporting.
How to use
Use the Audio Chapter Splitter in four practical steps.
- Step 1 Load one long recording
Choose the audiobook, lecture, interview, radio show, or class recording you want to divide into smaller sections.
- Step 2 Enter chapter start times
Paste timestamps from notes or add a chapter at the playhead while listening. Each start time becomes the beginning of a separate export.
- Step 3 Choose the chapter output format
Pick MP3 for smaller listening files or WAV when the chapter files will continue through an editing workflow.
- Step 4 Download the chapter files
Click Download chapter files, then check the names and first few seconds of each chapter before deleting or archiving the original.
Use Cases
When the Audio Chapter Splitter is useful.
Divide audiobook-style recordings
Turn one long recording into chapter files that are easier to navigate.
Result preview: One long spoken-word file becomes chapter-sized exports that are easier to navigate on a phone or MP3 player.
Break up radio sessions
Split a long show into interviews, music blocks, or segments for easier replay.
Result preview: A long show can be separated into interviews, music blocks, or segments so the user can replay only the part they need.
Create study clips
Separate important sections from a class recording without editing the entire file manually.
Result preview: Important class sections become smaller files for focused review without reopening and scrubbing through the full recording.
Best-in-class benchmark
How this tool closes the gap.
Checked against mature online audio tools for the same job: the goal is not only to complete the task, but to make the next decision obvious.
Top online editors provide a waveform, precise selection, preview before export, undoable operations, fades, merge/split workflows, and MP3/WAV output.
Task-specific tools are often faster than full editors but can feel isolated when users need the next cleanup step.
These pages now connect the exact edit to result previews, adjacent tools, and a reusable workflow note so users can trim, fade, split, merge, then continue without guessing.
FAQ
Questions about the Audio Chapter Splitter.
When should I use this free online Audio Chapter Splitter?
Use it when you already have an audio file and need a cleaner, smaller, clearer, or easier-to-share copy before opening a full audio editor. It is useful for lecture recordings, meeting audio, voice notes, podcasts, music clips, MP3 files, WAV files, and saved browser recordings.
Does the audio file stay on my device?
Yes. This browser-based audio tool is designed to process the file locally, so you can test settings, preview the result, and download a new copy without uploading private recordings to a server.
Which audio formats work best?
Common browser-supported formats such as MP3, WAV, M4A, AAC, OGG, and FLAC usually work best. Very large files, unusual codecs, or protected streaming files may need to be converted, trimmed, or recorded again first.
What should I check before downloading the new audio?
Preview the result, compare it with the original, and make sure the speech, music, timing, volume, file size, or metadata still feels right. If the setting is too strong, choose a gentler option and run the audio processing step again.