Four platforms, one formula
Instagram, TikTok, Facebook and X. Switch the platform and the benchmark moves with it, so the verdict is always against the right average.
Free tool
Engagement Rate Calculator
An engagement rate is the share of your audience that interacts with a post, calculated as interactions divided by followers times 100. Pick your platform, enter one post, and get the rate graded against that platform's published average rather than a number somebody made up.
Calculate your engagement rate
Pick a platform, then enter followers, likes and comments. Shares and the reach figure are optional and unlock the second rate. Everything runs in your browser, nothing is sent to a server, and no account is needed.
One post's numbers
Open the post in the app, read the insights, and copy the figures across.
The formula never changes. The median it is graded against does.
Leave this empty to match the published benchmarks, which count likes and comments only.
Your engagement rate
Median 0.48%
Engagement rate by followers
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Total interactions
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Scale: 0% to 1.92%
Interactions per 1,000 followers
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Shares the numbers you entered, not your data. Everything is in the link itself.
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Free to embed and free to cite, no attribution deal needed. Writers, agencies and course authors are welcome to drop the calculator straight into a post, and a credit link back is all we ask.
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What counts as a good engagement rate
It depends entirely on the platform, and the spread is wider than most reporting admits. Socialinsider's 2026 benchmarks, built from 70 million posts collected between January 2024 and December 2025, put the average at 2.60% on TikTok, 0.48% on Instagram, 0.15% on Facebook and 0.10% on X. TikTok's average is twenty six times Facebook's. Any single target applied across all four is wrong on at least three of them.
This calculator uses that one study for all four platforms on purpose, so the numbers stay comparable to each other. Where you see a different figure quoted elsewhere, check the formula before you assume somebody is wrong: Rival IQ counts every interaction against followers and reports a 0.30% Instagram median where Socialinsider counts likes and comments and reports 0.48%. Both are honest. Our Instagram engagement rate calculator grades against the Rival IQ figure and explains the difference there.
What This Calculator Gives You
A percentage on its own does not tell you what to post next. These four outputs do.
Graded, not just calculated
The result carries a verdict against the published average for the platform you picked, so you know whether your number is a problem before you change anything.
Interactions per 1,000 followers
A two decimal percentage is abstract at small scale. "Four per thousand" tells you what a good week actually looks like in whole numbers.
It flags bad inputs
More interactions than people reached means the two figures came from different posts. The tool says so instead of grading the mistake.
One Formula, Four Benchmarks, And Why That Distinction Matters
Engagement rate = (interactions / followers) * 100. That formula does not change between platforms, which is exactly why quoting a rate without naming the platform is meaningless. The platforms differ in how they distribute, not in how the sum works. Instagram and Facebook mostly show a post to people who already follow the account, so followers is a fair description of the audience and the rate behaves. TikTok sends video to a recommendation feed and decides the audience on early retention, so a follower count can understate a video by an order of magnitude. X sits lowest of all and publishes impressions on every post, which is the one platform where the better denominator is handed to you for free. Same arithmetic, four different meanings, and a single blended target across a multi-platform report will make the strong accounts look weak and the weak ones look fine.
How To Read Your Rate Properly
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1
Pick the platform before you read the number
The same 1% is a failing TikTok rate and a strong Instagram one. A rate with no platform attached is not a measurement, it is a decoration on a slide.
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2
Take every figure from the same post
Followers today against likes from a post six months ago is a different account. Open the post insights and read all of it off one screen.
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3
Decide what counts as an interaction, then never change it
Likes and comments only, or likes plus comments plus shares and saves. Both are defensible. Switching between them mid-year produces a trend line that measures your formula rather than your posts.
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4
Compare formats against each other, not against the account
A carousel and a video are two different products with two different audiences. Averaging them gives you a number that describes neither and hides the format that is actually working.
A Flat Engagement Rate Is Usually An Ideas Problem
Posting more often through the same idea returns the same rate on every platform in this list. What moves it is what the post asks a reader to do, and the accounts that beat their platform average are almost always answering a question their audience actually raised rather than announcing something.
That is the work Selzee does. It reads your comments, your reviews and your post results, finds the questions and objections that decide whether someone engages at all, and turns them into the next set of posts your team can make this week. If you want the ideas themselves, start with our Instagram post ideas guide. For the paid side, pair this with the ROAS calculator and the conversion rate calculator.
"Every account can calculate the rate. Almost none can say which post earned it, because nobody goes back and reads the comments on the one that worked."
Who This Is For
Founders, social managers and agencies reporting across several platforms at once, who need each account graded against its own average instead of one blended target. We publish no customer names or lift figures on this page, because we will not put numbers here that we cannot yet stand behind.
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A rate graded against the right platform average, not a blended target.
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The same rate restated in whole interactions, so a small account can act on it.
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A flag when the figures you entered did not come from the same post.
Engagement Rate Calculator: FAQ
01 What is a good engagement rate? +
There is no single answer, because the platforms are not close to each other. Socialinsider's 2026 benchmarks, from 70 million posts, report 2.60% on TikTok, 0.48% on Instagram, 0.15% on Facebook and 0.10% on X. A 1% rate is poor on TikTok, excellent on Instagram and remarkable on Facebook. Pick the platform in the calculator and it grades against the right one.
02 How do you calculate engagement rate? +
Add the interactions on a post, divide by your follower count, and multiply by 100. 138 likes, 21 comments and 34 saves on 4,200 followers is 193 interactions, which is 4.60%. The formula is the same on every platform. Only the benchmark you compare the answer to changes.
03 Should I divide by followers or by reach? +
By followers to compare yourself to published benchmarks, because that is what they are built on. By reach, views or impressions to judge a single post, because that is the audience it actually had. Enter the second figure and this calculator shows both. They will disagree, and the disagreement tells you whether a post travelled beyond your own audience.
04 Why do published engagement rate benchmarks contradict each other? +
Because the formulas differ, not the platforms. Rival IQ counts every interaction against followers and reports a 0.30% Instagram median. Socialinsider counts likes and comments and reports 0.48%. Same platform, same year, different arithmetic. Neither is wrong and neither is comparable to the other. This page uses the Socialinsider set throughout so the four platforms stay comparable to each other; our Instagram page grades against Rival IQ and says so.
05 Is a higher engagement rate always better? +
No, and small accounts are the clearest case. A 500 follower account with 50 engaged friends posts a 10% rate that will collapse the moment it grows, because the denominator grows faster than the relationships do. Read your own trend first and the published average second, and never compare two accounts of different sizes on this number alone.
06 Does this calculator send my numbers anywhere? +
No. The arithmetic runs in your browser. Nothing is uploaded, no account is needed, and there is nothing to sign up for to use it.
See What Is Actually Driving Your Engagement Rate
Measuring the number takes ten seconds. Moving it takes knowing which idea earned the shares. Selzee turns your own comments, reviews and post performance into the next set of posts worth making.
Request a DemoKeep exploring: the Instagram engagement rate calculator, the TikTok engagement rate calculator, the Facebook engagement rate calculator, the Twitter engagement rate calculator.