Engagement rate
Engagement rate is the percentage of an audience that interacts with a post — typically (likes + comments + shares + saves) divided by reach or followers, multiplied by 100.
Engagement rate is the headline metric most creators and brands track because it normalizes performance across accounts of different sizes. A 3–5% engagement rate is generally considered healthy on Instagram; benchmarks vary by platform and follower count. It is more meaningful than raw like counts.