YouTube Chapter Formatter
Turn rough timestamps into clean YouTube chapters and catch formatting problems before you publish.
Runs locally — your content never leaves this browser
! Starts at 00:00! At least 3 chapters! 10+ seconds apart
Rough timestamps
0 chapters found
YouTube-ready chapters
QUICK GUIDE
How to use this tool
- Paste your content into the editor.
- Review the result generated instantly in your browser.
- Copy or download it and keep creating.
See what this tool does
Before
0.00 intro 1.25 THE MAIN IDEA 04:10 - final tips
After
0:00 Intro 1:25 THE MAIN IDEA 4:10 Final tips
Frequently asked questions
How do I format YouTube chapters?
Put one timestamp and title on each line, starting with 0:00. Add the finished list to the video description. ClipFlow cleans punctuation, spacing, order, and titles.
Why are my YouTube chapters not working?
The first chapter must start at 0:00, you need at least three timestamps, and each chapter should be at least 10 seconds long.
What timestamp format should YouTube chapters use?
Use M:SS for videos under one hour or H:MM:SS for longer videos, followed by a space and a descriptive chapter title.
How many YouTube chapters should a video have?
YouTube requires at least three. Use enough to represent meaningful sections without creating a new chapter for every minor point.