Engagement rate methodology

Definitions we use

Selected interactions are the explicitly chosen likes, comments, shares and saves. A post rate is selected interactions ÷ a positive denominator × 100. Views, reach and followers remain distinct denominator choices.

A weighted aggregate uses sum of interactions ÷ sum of denominators × 100. A mean gives each valid post rate equal weight. Neither is automatically the correct measure for every task.

Some account-lookup vendors use median public interactions over their own recent-post sample. Our entered-data calculator uses the mean or weighted aggregate you explicitly select. Different numerators, samples and denominators mean their numbers need not match.

Reproduce a difference

Two illustrative posts have 50 interactions/500 views and 100/2,000 views. Their mean is (10% + 5%) / 2 = 7.5%; their weighted rate is 150 / 2,500 × 100 = 6%.

A selected missing metric excludes the row. A known zero is a valid count. A zero/missing denominator produces no rate. We show coverage and preserve full precision until display rounding. Rates above 100% are not clamped.

Source and engine version

Engine 1.0.0 is deterministic and shared by every calculator and saved report. This site has no industry benchmark dataset. Platform metric definitions can differ; do not treat our formula as a universal platform standard.