Turn any video into clean, clickable YouTube timestamps
This YouTube Timestamp Generator lets you paste your video, mark each moment as it happens, and get a perfectly formatted chapter list — ready to paste straight into your YouTube description. Runs entirely in your browser, on desktop or mobile.
Reviewed and tested against YouTube's current chapter requirements — last checked June 2026.
Tip: no video link? Just play your video anywhere (YouTube Studio, a local file, your phone), and click Mark Moment at each new section using the player below as a stopwatch, or type times in manually.
How the timestamp generator works
Four steps, all done in your browser. There's nothing to install and nothing to connect. Most creators finish marking a 10–15 minute video in under two minutes.
Load your video
Paste a YouTube URL for a live preview, or skip straight to marking moments if you're watching elsewhere — in YouTube Studio, on your phone, or in an editing app.
Mark each moment
Click "Mark Moment" the instant a new section starts, then name it. Repeat for every chapter — intros, topic changes, demos, Q&A segments.
Auto-format & validate
The tool sorts your list, checks the 0:00 start, and flags any chapter under YouTube's 10-second minimum spacing before you paste anything.
Copy into YouTube
Click Copy List and paste directly into your video description in YouTube Studio. Save — chapters typically appear within a few minutes.
YouTube's exact timestamp format
YouTube reads chapters straight from your video description — there's no separate upload step. Each line needs a timecode, a space, and a title. Get any of the four rules below wrong and chapters silently fail to appear, with no error message from YouTube.
| Video length | Format | Example |
|---|---|---|
| Under 1 hour | M:SS or MM:SS | 4:32 Setting up the mic |
| 1 hour or longer | H:MM:SS | 1:08:47 Live Q&A |
| First line, always | 0:00 | 0:00 Intro |
Start at 0:00The very first timestamp must be 0:00 — not 0:01, not blank. This one is non-negotiable, even if your intro is silent or has no title card.
At least 3 timestampsYouTube needs a minimum of three to render the chapter bar at all. One or two correctly formatted timestamps still won't display.
10 seconds apart, minimumEach chapter must run at least 10 seconds before the next one starts. Quick cuts and rapid-fire segments often trip this rule.
Ascending orderTimestamps must increase chronologically — no jumping backward in the list, even if you're listing a "best moments" recap separately.
This generator checks all four rules live as you build your list, so you'll see a warning before you ever paste a broken format into YouTube Studio.
Why chapters are worth the two minutes
Chapters aren't just a navigation nicety. They change how a video performs, both with viewers and with YouTube's own systems.
- Viewers jump straight to what they want. A tutorial, a podcast, a long-form review — chapters let someone skip the intro and land on the exact section they searched for, which keeps them watching instead of bouncing to another video.
- Chapter titles act as extra searchable text. Each title becomes part of the page's content, giving the video more relevant phrases to match against viewer searches inside YouTube and on Google. A chapter titled "How to fix audio sync" can surface in search even if those exact words never appear in your spoken script.
- The chapter bar adds visual structure to the progress scrubber. A video with clear segments looks more produced and more trustworthy than one long undivided bar, even before someone presses play — this is one of the simplest production-value signals you can add for free.
- Long-form content benefits most. Podcasts, tutorials, livestream recaps, and interviews see the biggest lift, since these formats are the ones viewers most often watch in parts rather than start to finish. Channels that consistently chapter their videos tend to see higher average view duration on long-form uploads.
Built for the way creators actually work
- Tutorial and how-to creators — break a process into steps viewers can jump between without rewatching the whole thing, e.g. "Installing the software," "Configuring settings," "Troubleshooting."
- Podcasters and interview channels — mark each topic or guest segment so listeners can find the part they care about, especially on episodes over 30 minutes long.
- Gaming and Let's Play channels — flag boss fights, key moments, or stage transitions in a long session so clip-hunters and highlight viewers can skip straight there.
- Course and education creators — turn a single long lecture into a navigable, lesson-by-lesson video that functions like a table of contents.
- Live stream re-uploaders — convert a multi-hour stream VOD into a structured, watchable archive instead of one undifferentiated timeline.
Common questions
What is a YouTube timestamp generator?
It's a tool that helps you mark specific moments in a video and automatically formats those moments into the timestamp list YouTube reads as chapters. Instead of manually calculating and typing out "1:08:47," you mark the moment and the tool handles the formatting and ordering for you.
How do I add timestamps to a YouTube video description?
Open YouTube Studio, select your video, click the description box, and paste a list in the format "0:00 Title" — one line per chapter. Save the video. YouTube automatically turns the list into clickable chapters as long as the four formatting rules above are met, usually within a few minutes.
What's the minimum number of timestamps YouTube needs?
Three. With fewer than three timestamps, YouTube won't generate a chapter bar at all, even if the formatting is otherwise correct and the first timestamp is 0:00.
Why aren't my chapters showing up after I saved them?
The most common causes are: the first timestamp isn't 0:00, there are fewer than three timestamps, two chapters are spaced less than 10 seconds apart, or the list isn't in ascending order. It can also take a few minutes for YouTube to process the change after saving — refresh the public watch page before assuming the format is wrong.
Does this tool require a YouTube API key, login, or upload?
No. The tool only uses your pasted video link to load YouTube's standard embedded preview player for your convenience — it doesn't call the YouTube Data API, doesn't require sign-in, and doesn't upload, store, or transmit your video or your timestamp list anywhere.
Can I use this on my phone?
Yes. The layout adapts to small screens, and all controls are sized for touch. You can mark moments, edit titles, and copy the final list entirely from a mobile browser, with no app to install.
Can I edit a chapter title after I've added it?
Yes. Click directly into any chapter title in the list and type — the output preview updates immediately, and you can reorder by editing timestamps too.
Do timestamps work the same way on Shorts or live streams?
Chapters apply to standard uploaded videos and VOD recordings of live streams. YouTube Shorts don't support chapters because of their short, single-scene format.
Will adding chapters change my video's actual content or upload it anywhere?
No. Chapters are just a formatted text list in your description — they don't touch the video file itself, require re-uploading, or affect your existing thumbnail, title, or tags.
Built on YouTube's published chapter guidelines
The formatting rules enforced in this tool — the 0:00 start, the three-timestamp minimum, and the 10-second spacing requirement — are taken directly from YouTube Help's official documentation on adding chapters. We test this tool against real uploads and re-check it whenever YouTube changes its chapter requirements, most recently in June 2026.