UtilibyWritten by the Utiliby editorial team · Last updated October 17, 2026 · Rules and formulas reviewed October 2026
What a YouTube timestamp generator does
Chapters turn a long video into labelled sections. Viewers see them as breaks on the progress bar and as a list they can open, so they can jump straight to the part they need. Creators add chapters by typing a list of timestamps and titles into the video description. The idea is simple, but the rules are strict, and one small slip, such as starting at 0:05 instead of 00:00, makes the whole list stop working. A YouTube timestamp generator removes that risk.
This free online tool does three jobs. It checks and cleans a list you paste, reporting every rule that fails. It builds a list from section lengths, so you do not have to scrub through the edit to find exact start times. And it shifts an existing list by a number of seconds, which saves time when you trim the intro after writing the description. A live chapter bar and a scrub slider show how your video will be divided before you publish.
How to use this timestamp maker, step by step
- Choose a tab. Check and clean if you already have times, Build from lengths if you only know how long each section is, Shift times if the video was trimmed.
- Enter your list. One chapter per line. A line such as
2:15 Set up the microphoneworks, as do brackets and dashes. - Add the video length. Optional, but it lets the tool test the last chapter.
- Read the checks. Green means the rule passes. Red means fix it. Tick Sort by time or Add a 00:00 chapter to repair common problems automatically.
- Preview. The chapter bar shows the proportions. Drag the slider to see which chapter plays at any moment.
- Copy. Paste the text into the description in YouTube Studio and save.
YouTube's chapter rules at a glance
YouTube Help sets out how manual chapters work. The tool tests each of these rules, so you can see exactly which one a list breaks.
| Rule | What YouTube says | What this tool does |
|---|---|---|
| Where | Add the list in the video description | Produces description-ready text |
| First timestamp | Must start with 00:00 | Flags it, or adds a 00:00 chapter |
| Count | At least three timestamps | Counts and warns |
| Order | Ascending, earlier to later | Checks, or sorts for you |
| Length | Each chapter at least 10 seconds | Marks short chapters in red |
| Priority | Manual chapters override automatic ones | Gives you full control of titles |
These rules were read from YouTube Help in October 2026. YouTube may change them, so check the current help page if something does not work as expected.
Timestamp formats: mm:ss and h:mm:ss
Short videos use minutes and seconds, written 02:15. Videos longer than an hour use hours, minutes and seconds, written 1:02:15. Mixing styles in one list is confusing and invites mistakes, so the generator applies one style to the whole list. In Automatic mode it switches to h:mm:ss when the video, or any chapter, passes the one-hour mark. You can force either style with the time format menu.
Write the first chapter as 00:00 or 0:00. Pad seconds with a zero, so 3:5 becomes 3:05. The tool accepts input in loose shapes, for example [3:45] Setting up or 3:45 - Setting up, and rewrites them into one clean style. If you export a transcript from an editing program, you can paste its markers straight in and clean them in one step.
How to write chapter titles that people click
A chapter title is a tiny headline. A viewer scanning the list has seconds to decide where to jump. Titles that name the task or question do best, because they match what the viewer wants to know.
- Be specific. Choose the right microphone beats Part 3.
- Use the viewer's words. If people search how to blur a background, use that phrase.
- Keep it short. Under about 60 characters, so it reads on a phone.
- Stay consistent. Use the same case and style across the list.
- Start strong. The 00:00 chapter should say what the video delivers, not just Intro.
- Avoid clickbait. The title must describe what actually happens in the section.
Use the case menu to apply sentence case or Title Case across the list in one click, and tick Number the chapters if your video is a countdown or step-by-step guide.
Worked example: a 14-minute tutorial
Suppose a tutorial has five sections: an intro of 1 minute 12 seconds, then 2:33, 4:45, 3:35 and 2:10. Adding the lengths gives start times of 00:00, 01:12, 03:45, 08:30 and 12:05, and a total of 14:15. The Build from lengths tab does that arithmetic instantly and prints the list ready to paste. If you then trim 15 seconds from the start, the Shift times tab moves every start earlier by 15 seconds, and the 00:00 chapter stays at 00:00 because the tool never lets a time go below zero without warning you.
| Section | Length | Start |
|---|---|---|
| Intro | 1:12 | 00:00 |
| Why chapters help | 2:33 | 01:12 |
| Setting up the description | 4:45 | 03:45 |
| Common mistakes | 3:35 | 08:30 |
| Final checklist | 2:10 | 12:05 |
Why your chapters are not showing, and how to fix them
If your timestamps appear as plain blue links but the progress bar has no breaks, one of the rules is not met. Work through this list.
- The list does not start at 00:00. Add it, or tick the option to add it for you.
- Fewer than three timestamps. Add another section or merge your plan into three.
- Times are out of order. Sort the list. A repeated time also breaks the ascending rule.
- A chapter is shorter than 10 seconds. Merge it with its neighbour.
- The description has not saved. Save in YouTube Studio and refresh the page.
- The time is beyond the video. Enter the video length so the tool can catch it.
- Chapters are turned off. Creators and viewers have settings that can hide them, and automatic chapters are not available for every video.
After a fix, YouTube can take a few minutes to update the player. Test on both desktop and phone.
Chapters, key moments and search
Chapters do two things for discovery. Inside YouTube, they let viewers jump to the useful part, which reduces the chance that they leave when the opening is not what they wanted. In Google Search, a video with clear timestamps may be shown with key moments, which link to individual sections. Neither is guaranteed, and neither replaces a strong title, a clear thumbnail and good content. Think of chapters as the table of contents of your video. A good one helps people trust that your video will deliver.
Write descriptions so that the chapter list is complete but the first two lines still describe the video. YouTube shows only the first lines before the Show more link, so put your summary first and the chapter list after it. The YouTube description generator on this site helps with that layout.
Beyond tutorials: other ways to use timestamps
- Podcasts and interviews. One chapter per question lets listeners skip to the guest or topic they care about.
- Live stream replays. Add chapters to the recording afterwards to mark games, segments or Q and A.
- Lectures and courses. Chapter names become a revision index.
- Product reviews. Separate unboxing, specifications, performance and verdict.
- Music mixes and playlists. Mark each track so listeners can find a song.
- Show notes. Use the markdown output to publish the same list, with links, on a blog.
Privacy, accuracy and responsible use
Everything on this page runs in your browser. The tool does not upload your timestamps, titles or video link, and it has no account. It checks the rules YouTube publishes, but it cannot see your video, so it cannot tell whether your times match the content. Play the video at each timestamp to confirm. Write honest chapter titles, because misleading titles frustrate viewers and may breach YouTube's policies.
Related free YouTube tools
Use these free online tools together with this one:
- Wrap your chapters in a well-structured description with the YouTube description generator.
- Pick a clear, clickable title for the same video with the YouTube title generator.
- Planning a series? Work out how long it takes to watch with the YouTube playlist length calculator.
Frequently asked questions
What is a YouTube timestamp generator?
A tool that turns chapter times and titles into text you can paste into a YouTube description. This one also checks the list against YouTube's chapter rules, draws the chapters on a bar and can work out start times from section lengths.
How do I add timestamps to a YouTube video?
Open YouTube Studio, choose the video, and in the description add a list of timestamps with titles, one per line. The first must be 00:00 and there must be at least three, in ascending order. Save, and the chapters appear in the player.
Why must the first YouTube timestamp be 00:00?
YouTube's chapter rules say the first timestamp in the list must start with 00:00. If your list begins at a later time, the chapters will not be created. Tick Add a 00:00 chapter if missing to fix it automatically.
How many timestamps do I need for chapters?
At least three timestamps listed in ascending order. With fewer, YouTube does not turn the list into chapters.
What is the minimum length of a YouTube chapter?
Ten seconds. The checker flags any chapter shorter than that and shows it in dark red on the chapter bar.
What format should YouTube timestamps use?
Minutes and seconds such as 02:15, or hours, minutes and seconds such as 1:02:15 for long videos. Use one style throughout. The Automatic option switches to h:mm:ss when your video passes an hour.
Why are my YouTube chapters not showing?
The usual causes are a first timestamp that is not 00:00, fewer than three timestamps, times out of order, chapters under 10 seconds, or the change not being saved yet. Paste your list into the checker to see which rule fails. Chapters can also be switched off on some videos.
Can I build timestamps if I do not know the start times?
Yes. Use the Build from lengths tab. Enter each section's title and length, and the tool adds them up to give every start time.
What if I trim the video after writing timestamps?
Use the Shift times tab to move every timestamp earlier or later by a number of seconds, for example 15 seconds when you cut an intro.
Can I make clickable timestamp links?
On YouTube, a timestamp in the description is clickable by itself. For other places such as a blog post or a pinned comment on another site, enter your video URL and choose the link output style to get youtu.be links with a start time.
Do chapters help my video get found?
Chapters make long videos easier to navigate, and Google says it may use them to show key moments in search results, so they can help viewers find the right part. They are not a guaranteed ranking boost, and good titles and content matter more.
What makes a good chapter title?
Short, specific and written in the words a viewer would search for, such as Set up the microphone, not Part 2. Keep titles under about 60 characters so they read well in the player.
Can I use timestamps on Shorts?
Chapters are meant for longer videos. Shorts are very short, so a three-chapter list with 10-second minimums is rarely useful there.
Do automatic chapters replace this?
YouTube can create automatic chapters for some videos, but manual chapters in the description override them and give you control over the titles.
Is my text uploaded anywhere?
No. The tool works entirely in your browser and does not send your timestamps or video link anywhere.
Is this YouTube timestamp generator free?
Yes. It is free to use online with no sign-up, and you can copy, download as text or CSV, or print the chapter list.
Can I check timestamps I wrote by hand?
Yes. Paste them into the first tab. Lines that start with a time are read, and anything else is reported so that you can fix it. Brackets and separators such as dashes or colons after the time are accepted.
Sources and further reading
- YouTube Help, Video chapters.
- Google Search Central, Video best practices.
- YouTube Help, Change your video details in YouTube Studio.
Sources were consulted in October 2026. Standards and rules can change, so always check the official page for your situation.