TikTok's algorithm heavily weighs completion rate — the percentage of viewers who watch your entire video. This means video length directly affects your reach.
Optimal Lengths by Content Type
7–15 Seconds
Best for: Quick tips, jokes, transitions, satisfying clips. High completion rates are almost guaranteed at this length.
15–30 Seconds
Best for: Short tutorials, product reviews, day-in-my-life clips. This is the sweet spot for most content.
30–60 Seconds
Best for: Storytelling, detailed tutorials, in-depth reviews. Requires a strong hook to maintain attention.
1–3 Minutes
Best for: Deep educational content, storytime, vlogs. Only use this length if your content genuinely needs it.
The Completion Rate Math
A 10-second video watched completely by 70% of viewers will outperform a 60-second video watched completely by only 20%. When in doubt, make it shorter.
Pro Tip
Use EvoMotion's speed controls to compress your content without losing the message. Speed up less important sections and slow down the key moments.