Instagram Engagement Rate Calculator

Per-post averages · Followers & optional reach from Insights

2026 Edition — Free Tool

Your averages (per post)

Followers

Average likes

Average comments (optional)

Average saves (optional)

Average shares (optional)

Average reach (optional, Insights)

Engagement rate (followers)

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Total interactions ÷ followers

Engagement rate (reach)

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Enter average reach for reach-based ER

Total interactions / post

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Likes + comments + saves + shares

Influencer tier

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Benchmark (total ER vs followers)

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Rates vs followers

Like rate

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Comment rate

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Save rate

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Share rate

Share of total interactions

Note: Results use your entered averages per post. Total engagement rate uses likes + comments + saves + shares divided by followers (and by reach if provided). Benchmarks are simplified rules of thumb; niche and audience quality change what brands consider “good.” This is not professional media-buying advice.

What is Instagram engagement rate?

Instagram engagement rate measures how strongly your audience reacts to a typical post, relative to either your follower count or the post’s reach from Insights. This calculator uses per-post averages you enter: likes, comments, saves, and shares. Adding optional reach lets you compute the rate brands often prefer when judging performance: interactions divided by people who actually saw the content.

Follower-based ER: (Likes + Comments + Saves + Shares) ÷ Followers × 100.
Reach-based ER (optional): (Same total interactions) ÷ Reach × 100.

How benchmarks work here

The “Excellent / Good / Low” badge compares your total follower-based engagement rate (all interaction types combined) to simple thresholds (Excellent: ≥ 5%, Good: ≥ 2%). Larger accounts often show lower percentages than nano creators; treat benchmarks as orientation, not a verdict.

Important: Instagram does not publish one official formula. Teams may exclude saves, use median instead of mean, or weight Reels differently. Use this tool for consistent estimates and comparisons across your own posts over time.