How Long Should a TikTok Be?
For most content, 21 to 34 seconds gets the highest completion rate, but that is not the same as the best length overall.
For most content, 21 to 34 seconds gets the highest completion rate, but that is not the same as the best length overall. TikTok does not reward length, it rewards retention, and videos over 60 seconds can pull in more total reach when they hold attention the whole way through. The right length depends on what you are optimizing for.
Updated September 2026
What TikTok actually rewards at each length
TikTok's algorithm leans on retention more heavily than almost any other short-form platform, and the target moves with length. A 45% average watch time is weak on a 15-second video and excellent on a 3-minute one, so a retention number only means something once you know the length it came from.
| Video length | Aim for average watch time |
|---|---|
| Under 15 seconds | Above 60% |
| 15 to 30 seconds | Above 50% |
| 30 to 60 seconds | Above 40% |
| 60 seconds to 3 minutes | Above 30% |
Completion rate vs average watch time, they are not the same thing
Two different numbers get used almost interchangeably, and they measure different things. Completion rate is the percentage of viewers who watch all the way to the final frame. Average watch time, sometimes called retention, is the average percentage of the video that gets watched across everyone who saw it, including people who left early. A 30-second video with an average watch time of 21 seconds has 70% retention, even if very few people actually watched every single second to the end.
Completion rate falls off fast as videos get longer, roughly 89% for a 7-second clip down to under 10% for a 10-minute one. That does not make long videos bad, it just means they are being judged on a different metric than short ones, and comparing a completion rate across two different lengths is comparing two different things.
Why shorter videos still don't always win
Videos between 21 and 34 seconds consistently post the highest completion rates, and that range is often the right call for entertainment, trends, and quick reveals. But an independent analysis of over a million TikTok posts found videos over 60 seconds pulling in roughly 43% more reach and 64% more total watch time than shorter ones, as long as completion held up. TikTok appears to weigh total watch time alongside completion rate rather than completion rate alone, which is how a longer video with solid retention can outreach a short one with excellent completion.
Matching length to what you're actually making
Length is really a content-type decision more than a fixed rule.
- Comedy, trends, and quick reveals: 21 to 34 seconds tends to hit the completion-rate sweet spot.
- Talking-head, opinion, or explainer content: 30 to 90 seconds gives enough room to make a real point without losing people.
- Tutorials and educational breakdowns: can stretch to 60 to 90 seconds or beyond without a major completion penalty, provided the pacing and hook hold up.
- Content aimed at TikTok's Creator Rewards Program: needs to clear 60 seconds minimum to qualify at all, a fixed requirement separate from whatever length actually performs best.
Check your own numbers against the table above using the Completion Rate Calculator before assuming a length is or is not working for your account specifically.
How to actually find your length
The most reliable way to answer this for your own account is a small experiment rather than a general rule: post the same type of content at two or three different lengths, then compare average watch time percentage, not raw seconds watched, against the benchmarks above. If 60-second videos are consistently landing above 40% and 30-second videos are only reaching 35%, the longer format is working better for your specific audience, whatever the general advice says.
Once you know the length that actually holds attention, the AI TikTok Script Generator can help you plan the pacing to fill that time deliberately instead of padding it out.
Completion rate vs reach, as length increases
Quick answers
Does a shorter TikTok always get more views? No. Shorter videos tend to win on completion rate, but videos over 60 seconds can pull in more total reach and watch time when retention holds up, since TikTok weighs total watch time alongside completion rate rather than completion rate alone.
What is a good completion rate for a TikTok video? It depends entirely on length. Aim for above 60% average watch time under 15 seconds, above 50% between 15 and 30 seconds, above 40% between 30 and 60 seconds, and above 30% between 60 seconds and 3 minutes.
How long do TikTok videos need to be to make money? TikTok's Creator Rewards Program requires videos to be at least 60 seconds long, along with other eligibility requirements like follower count and recent view totals. This is a fixed minimum, separate from whatever length actually performs best for your content.
Is 60 seconds too long for a TikTok video? Not inherently. It depends on the content and whether retention holds up. Talking-head, opinion, and tutorial content regularly performs well between 30 and 90 seconds, while comedy and quick reveals tend to do better closer to 21 to 34 seconds.
Once the views come in
Once your length is dialed in and views start coming back in, What Is a Good View Count on TikTok? Full 2026 Guide covers what to expect at different account sizes.
Written by the Handler Team
