How to add chapters to a YouTube video (step-by-step)

YouTube chapters break your video's progress bar into clickable segments. Viewers can skip to the part they want, the chapter title appears in search results, and average watch time goes up because people find what they came for instead of leaving. Adding them takes about two minutes once you know the rules.

Step 1 — Open YouTube Studio

Go to studio.youtube.com and sign in with the channel that owns the video. Click Content in the left sidebar, then click the title of the video you want to edit.

Step 2 — Find the description box

On the video details page, the Description field is the large text area below the title. Click into it and place your cursor on a fresh line — chapters can sit at the top or bottom of the description, but they must each be on their own line.

Step 3 — Write the chapter list (the format matters)

YouTube's chapter parser is strict. Use this exact format:

0:00 Introduction
1:23 What is the problem
4:07 The 3 best solutions
9:45 Demo
14:20 Wrap up

Rules YouTube enforces:

• The first timestamp must be 0:00.
• You need at least three chapters.
• Each chapter must be 10 seconds or longer.
• Timestamps must be in chronological order.
• Use m:ss for videos under an hour, h:mm:ss for longer ones.

Step 4 — Save and verify

Click Save in the top-right of YouTube Studio. Wait a couple of minutes, then open the video on YouTube. You should see vertical marker lines on the progress bar and chapter titles appearing as you hover. If they don't show up, see "common mistakes" below.

The fastest way: generate chapters automatically

Writing chapter titles by hand for a 45-minute video means rewatching and pausing constantly. Our YouTube Chapter Generator reads the video's transcript with AI, finds the natural breakpoints, and gives you a chapter list, an SEO-optimized title, and a description in seconds. Paste the URL, copy the output, save your description.

Common mistakes (why your chapters aren't showing)

1. First timestamp isn't 0:00. If your first line says 0:30 Intro, YouTube ignores the entire chapter list. Always start at 0:00.
2. Fewer than 3 chapters. Two chapters won't render.
3. A chapter shorter than 10 seconds. If you have 1:23 followed by 1:25, the second one breaks the list.
4. Timestamps out of order. Going backwards anywhere invalidates everything after.
5. Extra characters. Avoid bracketed timestamps like [0:00] Intro — plain 0:00 Intro is what YouTube parses.

Why chapters matter for views

Chapters affect three things YouTube cares about: average view duration, click-through from search, and key-moments visibility in Google search. When viewers can jump to the part they want, they stay longer instead of bouncing. When chapter titles include keywords, they show up in YouTube's search results as their own clickable previews. Channels that consistently chapter every video tend to see noticeable lifts in both view duration and external search traffic.

FAQ

Quick answers — see the FAQ schema for the structured version.