Calculate engagement rates across platforms using likes, comments, shares, and followers. Compare rates against industry benchmarks.
Engagement rate divides the likes, comments, and shares a post collects by the account's follower count, and this tool does that arithmetic for you, then compares the resulting percentage against benchmark ranges for the platform you choose. The figure people most often misread is the surprise: the rate is follower-relative, so it flatters small accounts. A double-digit rate on a 200-follower account is routine rather than proof of virality, while the same rate on a million-follower account would be extraordinary, and comparing rates across platforms treats unlike numbers as alike.
A concrete input and expected output from the current implementation.
Input
Platform: Instagram. Likes: 150. Comments: 12. Shares: 8. Followers: 5,000.
Expected output
Engagement rate: 3.4% (170 engagements on 5,000 followers).
Likes, comments, and shares sum to 170; 170 divided by 5,000 is 0.034, or 3.4% after multiplying by 100. Because the rate is follower-relative, the same 170 engagements on 50,000 followers would return 0.34%.
The tool sums the likes, comments, and shares you enter into total engagements, divides by the follower count, and multiplies by 100 to return a percentage. Entering one post yields that post's rate; entering several returns the average per-post rate, which is the figure benchmark tables typically assume.
The tool holds platform-specific benchmark ranges and reports where your percentage falls relative to them. Benchmarks are bands, not grades: they vary by platform, account size, content format, and publication year, and publishers revise them as algorithms change, so treat the placement as context for your own history rather than a verdict.
Only relative to platform, account size, and your own history. Published benchmarks are estimates that shift as platforms change their algorithms, so no single percentage is universally good. The more reliable comparison is your own trailing average: a rate above it means the post outperformed your recent norm, whatever industry tables claim.
Because followers are the denominator. When the base grows from 1,000 to 10,000, the rate can fall sharply even when interactions hold steady. Watch total engagements and engagements per post alongside the rate, so genuine audience growth does not look like a content problem.
The example and behavioral notes were checked against the browser implementation. Standards and primary references below define the relevant format, formula, or platform behavior.
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