What is Engagement rate?

Engagement rate is the share of people who interact with a piece of content rather than merely seeing it, calculated as total interactions divided by either reach or follower count.

The choice of denominator matters enough that the two versions are not comparable: engagement rate by reach measures how compelling the content was to those who saw it, while engagement rate by followers measures the health of an audience relationship, and the same post can look strong on one and weak on the other. Benchmarks vary widely by platform and account size, and small accounts routinely post higher rates than large ones because their audiences are self-selected. Engagement rate is best treated as a diagnostic rather than a goal. It correlates with distribution, since platforms use early interaction as a ranking signal, but it correlates poorly with revenue — content engineered for comments and saves can perform beautifully while selling nothing. For commercial accounts the useful practice is to read engagement alongside a downstream metric such as profile visits, link clicks, or attributed sales, so that a post that entertains is not confused with a post that works.