Facebook engagement rate calculator

The Facebook engagement rate formula

Facebook engagement rate is the share of your page followers who reacted, commented or shared instead of scrolling past. Add up the interactions, divide by followers, multiply by 100.

(reactions + comments + shares) ÷ followers × 100

Reactions means all six of them added together. A like, a love and an angry face each count as one, which is the convention every published benchmark uses, and it is worth remembering that the metric cannot tell the difference between approval and an argument.

Worked example

A post on a 10,000 follower page picks up 18 reactions, 4 comments and 2 shares. Add the interactions: 18 + 4 + 2 = 24. Divide by followers: 24 ÷ 10,000 = 0.0024. Multiply by 100 and the engagement rate is 0.24%.

That looks broken next to a TikTok number and it is comfortably above the Facebook average. Read on for why the two platforms cannot be compared at all.

For a page average, switch modes and enter your totals across a run of posts plus how many posts they cover. The tool divides by the post count first, then by followers, so the answer is the rate of an average post rather than a month of posts stacked into one number.

Why Facebook rates read so low

The average business page manages 0.15% of its followers (Socialinsider, 2025 data). On a 10,000 follower page that is 15 interactions on a post. Nothing is wrong with the formula. The denominator has simply stopped describing an audience.

Organic reach for pages fell for a decade, and what is left is a slice. A page with 10,000 followers whose post reaches 500 people is still being divided by 10,000, so the rate is measuring two things at once: how many of your followers Facebook showed the post to, and how many of those people cared.

Same post, both ways. Those 24 interactions on a post that reached 500 people read 4.8% per reach and 0.24% per follower. Twenty times apart, from one post, and neither number is a lie. The follower version is the standard because followers is the only figure anyone outside the page can see.

There is a genuine bright spot in the recent data, and it is worth knowing before you write the platform off. Facebook was the one major platform where organic reach grew in 2025, up 72% year on year (Metricool, 2026). Reach up while engagement stays flat means more people are seeing page posts and about the same number are bothering to react, which puts the problem back where it belongs: the content, not the distribution.

Worth saying plainly, since you are here doing the sums: for most of the businesses we work with, a Facebook page is not where the attention is. If short video is the plan, the platform where short form actually pays back for most businesses is measured a different way again, against views rather than followers, and the rates read far higher for that reason alone.

Followers or reach on Facebook

Pick one, use it every time, and say which one you used. The two versions answer different questions and they are twenty times apart, so mixing them quietly destroys a report.

• Divided by followers is what this calculator does and what published averages use. Anyone can reproduce it from a public post, which is why it survives as the standard.
• Divided by reach needs admin access to Insights, and it tells you whether the post worked for the people who actually saw it. Useful internally, useless externally, because nobody can check it. Published impression based figures land around 5% (Buffer, April 2025) against 0.15% per follower, so quoting one next to the other makes a page look either brilliant or dead depending on which you picked.

The honest way to run both: report per follower to the outside world, and watch per reach yourself. If per reach is healthy and per follower is not, you have a distribution problem worth solving with format and paid, not a content problem.

Post type moves the number more than posting time does

Across 2025, the follower based averages by format were status posts 0.20%, albums 0.18%, Reels 0.18%, single images 0.15% and link posts 0.05% (Socialinsider, March 2026). A link post averages a third of an image post and a quarter of a Reel.

Most quiet business pages I look at are a feed of links to the blog. Compare your own formats in the calculator before you change anything else, because a page average built mostly from links is measuring the format choice rather than the writing.

Where to find each number

Every number the calculator needs is printed on a public post. Reactions sit under the post with the icons, and the comment and share counts sit next to them, so you can work out the rate for your page or a competitor's without logging into anything.

For your own page, Meta Business Suite lists reactions, comments, shares and reach per post under Content, and the Insights tab gives you a date range if you want a page average across a run of posts. Your follower count is on the page itself, listed separately from likes on older pages.

What is a good engagement rate on Facebook?

The published average below is measured against page followers, the same basis this calculator uses, so your number and the benchmark are the same sum. It covers business pages rather than personal profiles, and clearing it is a low bar: doubling the average still means about 30 interactions on a 10,000 follower page. Treat the row as a sanity check, then compare your posts to your own median, by format.

How this calculator works

• Single post divides reactions plus comments plus shares by your page follower count. Page average takes your totals across a run of posts, divides them by the number of posts to get an average post, then divides that by followers.
• Shares are optional. Left blank they count as zero, which pulls the rate down, and since the share count is public on every post there is no good reason to leave it out.
• Reach is not an input here on purpose. It is admin only, so a reach based rate cannot be checked by anyone you send it to. Work it out by hand if you need it: interactions divided by reach, times 100.
• Nothing is uploaded. The maths runs in your browser, there is no account, and no numbers are stored between visits.