Everyone wants a number. The honest answer: a YouTube video should be exactly as long as it stays interesting — not a second more. But there are useful ranges by goal and format, and one metric that settles every debate.
Why there is no magic number
YouTube does not reward length; it rewards watch time and retention. A 6-minute video people finish beats a 16-minute video people abandon at minute three. Padding a video to hit some 'ideal' length is the fastest way to tank retention — and retention is what the algorithm actually watches. See watch time vs views for why.
Useful ranges by format
| Format | Typical range | Why |
|---|---|---|
| Shorts | 15–45 sec | Hook and payoff, no filler |
| Quick how-to / answer | 3–6 min | Solve one thing fast for search |
| Tutorial / deep dive | 8–15 min | Enough room to be thorough |
| Vlog / story / essay | 10–20+ min | Narrative needs space to breathe |
Treat these as starting points, not rules. The right length is whatever the topic genuinely needs.
Let retention decide
Your own analytics answer the question better than any blog post. Open the retention graph for your videos in channel analytics and look for the moment the line drops sharply — that is where you lost people. If it drops early, your intro is too slow. If it drops at a specific section, that part is droppable. Edit toward the version that holds attention, and the ideal length reveals itself.
Practical rules of thumb
- Cut the intro. Get to the value in the first 10–15 seconds.
- Earn every minute. If a section does not add value, cut it.
- Match the promise. A 'quick tip' video should be quick; a 'complete guide' can be long.
- Add [chapters](/blog/how-to-add-chapters-to-youtube-video) on longer videos so viewers find what they want.
Make every minute earn its place
Tubely helps you package and structure videos so viewers stay to the end — whatever the length.