Engagement rate calculator

It is the share of your audience that interacts with a post. You add up the interactions (likes, comments, shares and saves), divide by the denominator you pick — followers or reach — and multiply by 100. It is the metric brands use to judge whether an account moves its audience or just accumulates one.

Reach is the unique people who saw the post. Impressions count every time it appeared on a screen: if the same person sees it three times, that is three impressions and one reach. On TikTok and Reels, video plays are the practical equivalent of reach.

In this calculator: likes, comments, shares and saves. The last two are optional because they are not always at hand, but it is worth entering them: they are the signals that weigh most in how Instagram and TikTok distribute a post, and leaving them out understates the result.

Against followers to compare yourself with other creators: that is the media kit standard. Against reach to judge how one specific post performed, which is the recommended basis on TikTok and Reels, where much of the reach comes from people who do not follow you. Both numbers are valid, but they are not comparable with each other.

It depends on account size: small accounts run higher than large ones, so 3% can be excellent for a macro and barely average for a nano. That is why the calculator compares your result against the band for your tier rather than against a fixed number.

The same way as elsewhere, but with two differences that matter. The first is the denominator: measuring over subscribers on YouTube is not very representative, because most views on a video come from recommendations and search rather than from subscribers — which is why measuring over views works better. The second is that YouTube does not expose saves, so the maths uses likes, comments and shares. As a reference, likes over views usually sit around 4%.

They are the audience-size bands the market uses: nano up to 10K followers, micro from 10K to 100K, mid-tier from 100K to 500K and macro above 500K. They decide which benchmarks the account is compared against.

That is the expected pattern: the bigger the account, the broader and less closely matched the audience, so the percentage falls even as absolute interactions rise. A one-off drop can also come from the niche, the format, or a spike of cold reach after a video goes viral.

Because followers can be bought and real interactions largely cannot. Engagement is the simplest signal for telling an audience that pays attention apart from one that only inflates a number, and it is usually the first thing checked before closing a collaboration.