YouTube Timestamp Generator

One chapter per line, in the format "Chapter Title | duration", where duration is how long that section runs — not its start time. For example "Intro | 0:45" means the intro lasts 45 seconds. The tool adds up the durations to calculate each chapter's actual start time in the video.

Yes — use h:mm:ss format for a section longer than an hour, e.g. "Deep dive | 1:15:00". Shorter sections can just use m:ss, like "2:30".

Paste the generated timestamps directly into your YouTube video description. YouTube automatically turns lines starting with a timestamp (like "0:00 Intro") into clickable chapter markers, as long as the first line starts at 0:00 and you have at least three timestamps.

Lines that don't match the "Title | duration" format are skipped automatically, so a typo on one line won't block the rest — just check the result to make sure every chapter you expected shows up.