Clean and validate YouTube timestamps, format chapter titles consistently, check chronological order, and confirm that the first chapter starts at 0:00 before pasting chapters into a video description.
How to use the YouTube Timestamp & Chapter Formatter
Paste one timestamp and title per line. Review warnings for missing 0:00, invalid lines, or timestamps that are out of order, then copy the clean list into the YouTube description.
Frequently Asked Questions
How do I format YouTube chapters?
Put one timestamp and title per line, beginning with 0:00, and keep timestamps in ascending order.
Why must the first chapter start at 0:00?
YouTube expects a chapter list to begin at the start of the video for automatic chapter recognition.
How many YouTube chapters do I need?
YouTube generally requires at least three timestamps, with each chapter lasting at least ten seconds.
Can I use hour-long timestamps?
Yes. Use H:MM:SS for videos longer than one hour.
Does this edit my YouTube video?
No. It prepares copy-ready chapter text for your description.