Completion Rate

Completion rate measures what happens after a viewer gets past the hook. Where hook rate measures whether viewers stay in the first 3 seconds, completion rate measures whether they stay through the entire clip. The two metrics work together: a clip with a high hook rate but low completion rate suggests the opening is strong but the clip loses the viewer before it ends — often a sign the clip is too long, loses momentum, or has a weak payoff. A clip with low hook rate but high completion rate means the clip is good once viewers stay, but the opening isn't compelling enough to stop the scroll.

Short clips (under 30 seconds) have higher average completion rates than long clips (45–60 seconds) purely because less time commitment is required to finish them. When analyzing completion rate, compare clips of similar length — a 20-second clip with 70% completion is good; a 55-second clip with 70% completion is exceptional.

Completion rate matters for algorithmic distribution at two points. First, it's an input into the platform's initial distribution decision alongside hook rate and engagement rate. Second, high completion rate is associated with "loop behavior" on TikTok — when a clip ends and a viewer watches it again, each loop is counted as a view, and high loop rates are a strong signal of exceptional content. Clips edited to end in a way that encourages replay — a surprising reveal, an incomplete statement, a cliffhanger — generate higher loop rates and disproportionately high completion metrics.