Thumb-stop ratio
Thumb-stop ratio is the share of feed impressions where a person stops scrolling long enough to register a short video view, usually 3 seconds. It is calculated as 3-second views divided by impressions. It is a practitioner term with no official definition and is often used as a synonym for hook rate.
Updated
Formula and example
Thumb-stop ratio = (3-second video views ÷ impressions) × 100.
Example: 50,000 feed impressions and 9,000 three-second views gives a thumb-stop ratio of 18%.
Why the name is useful
The phrase describes the physical act it measures: a thumb moving up a phone screen and stopping. That framing is a good creative brief in itself. The first frame has to interrupt a motion that is already happening, which favours movement, faces, contrast and a clear subject over subtle openings.
It applies best to scrolling feeds: Facebook and Instagram Feed, TikTok, Reels and Shorts. In-stream video, where the ad plays before content someone chose, is a different situation and is better judged on skip and view-through rates.
Pitfalls when comparing
- Autoplay settings differ by platform, so a 3-second view is not equally hard to earn everywhere.
- Placement mix changes the number: an ad served mostly in Stories will not compare cleanly with one served in Feed.
- Compare an ad against others in the same placement and audience, not against a figure from a blog post.
How the platforms define it
- Meta's 3-second video play: at least 3 seconds played, or 97% of a shorter video, replays excluded.
- TikTok's shortest view metric is 2 seconds, so a TikTok thumb-stop ratio uses a lower bar than a Meta one.
Questions
- How do I calculate thumb-stop ratio?
- Divide 3-second video views by impressions and multiply by 100. 9,000 three-second views from 50,000 impressions is 18%.
- How can I improve thumb-stop ratio?
- Open on motion, a face or the product in use; put a short headline on screen in the first frame; and avoid logo cards or slow fades at the start.
Sources
Read on 27 October 2026. Platforms change specs and policies without notice; check the source before you build to a number.