Quick answer
A post with 1,150 likes and 86 comments on a 42,000-follower account has a core engagement rate of 2.94% — about average for a micro account, whose tier benchmark is 3.5%. Adding shares and saves lifts it to 3.78%. Engagement rate, not follower count, is the number brands use to compare accounts.
How the Instagram Engagement Rate Calculator works, step by step
Enter followers and the likes, comments, shares and saves on a post — or average them across your last 10 to 20 posts for a stable figure — plus the post's reach. The calculator returns three rates: the core rate (likes plus comments, per follower), the full rate (adding shares and saves), and the reach-based rate, plus a grade against your account tier. At the defaults — 42,000 followers, 1,150 likes, 86 comments, 140 shares, 210 saves and 18,000 reach — the core rate is 2.94%, the full rate 3.78% and the reach-based rate 8.81%.
There are two conventions and they answer different questions. Engagement by followers (used here) measures how active your audience is relative to its size, and it is the public comparison metric brands use to screen accounts. Engagement by reach divides by accounts that actually saw the post and runs several points higher — use it to judge content, use the follower version to judge the account.
Benchmarks fall as accounts grow, so the calculator grades you against your own tier: nano accounts (up to 10,000 followers) average 4.8%, micro (10,000 to 100,000) 3.5%, mid (100,000 to 500,000) 2.4%, macro (500,000 to 1 million) 1.9%, and mega (over 1 million) 1.5%. A rate at 1.5 times your tier average grades Exceptional; at 0.8 times, Average; below 0.45 times, Low.
Shares and saves are interactions, and for distribution they are stronger signals than likes. The classic public formula uses likes plus comments because those are visible on other people's accounts. For your own account, include saves and shares from your insights: a post with modest likes but heavy saves is performing better than the public formula shows.
Benchmarks vary by study and method — brand-account studies report much lower averages than creator studies — so treat the tier figures as a guide, not a verdict. Judge a rate against accounts of your size in your niche, and against your own trend over time, before concluding anything from a single post.
The formula
Core engagement rate = (likes + comments) / followers x 100. Full engagement rate = (likes + comments + shares + saves) / followers x 100. Reach-based rate = full interactions / reach x 100.
Worked example — try it on the calculator above
Worked example: comparing two accounts for a brand deal
Account A: 200,000 followers, posts average 3,000 likes and 150 comments. Rate = 3,150 / 200,000 = 1.58% — below the 2.4% mid-tier average. Account B: 60,000 followers, posts average 2,400 likes and 300 comments. Rate = 2,700 / 60,000 = 4.5% — above the 3.5% micro-tier average. Account B delivers nearly the same interactions per post with under a third of the audience, so a brand paying A a follower-based premium is buying reach A does not actually produce. B can justify rates close to A's with this arithmetic. B is above average, not exceptional: the Exceptional bar for its tier is 1.5 times the 3.5% micro average, or 5.25%.
Frequently Asked Questions
What is a good engagement rate on Instagram?
As rough bands: above 3% is strong for most account sizes, 1 to 3% is typical, and below 1% signals a passive, purchased or mismatched audience. Smaller accounts naturally run higher — a 4% rate at 5,000 followers and a 2% rate at 500,000 are both healthy for their tier. Compare within your size band and niche before concluding anything.
Should engagement be calculated on followers or reach?
Both, for different decisions. Followers-based rate is the public comparison metric brands use to screen accounts. Reach-based rate (interactions divided by accounts reached) strips out the algorithm's distribution and tells you how the content itself performed; it commonly runs 5 to 15% on feed posts. Reporting a reach-based figure as if it were follower-based inflates comparisons and sponsors notice.
Do shares and saves count as engagement?
Yes — they are interactions, and for distribution they are stronger signals than likes. The classic public formula uses likes plus comments because those are visible on other people's accounts. For your own account, include saves and shares from your insights: a post with modest likes but heavy saves is performing better than the public formula shows.
How can I raise my engagement rate?
The rate rises when interactions grow faster than followers: prompts that ask a specific question, content worth saving (checklists, tutorials, price breakdowns), replying to comments early while the post is being distributed, and removing inactive or bot followers who dilute the denominator. Buying followers does the opposite — it lowers the rate and is visible in exactly this calculation.
Estimates, not advice. This calculator provides educational estimates based on the inputs you enter and the assumptions shown on this page. It is not financial, tax or investment advice, and it cannot see your full situation. Verify important figures against official sources, and consider a qualified professional for decisions about your own money. See our Disclaimer and Methodology.