The engagement rate measures the share of your audience that reacts to your posts. It is an indicator brands often look at before a collaboration, and the one that tells you whether your content really works, beyond the plain number of followers. It takes a minute to calculate, as long as you know what goes into the formula.
The formula
The most common calculation is:
engagement rate = (likes + comments) ÷ number of followers × 100
You can apply it to one post, or, more usefully, to the average of several recent posts, for example the last ten. A single post can be exceptional or disappointing, and an average smooths those gaps out.
There is a variant: dividing by the post's reach (the number of accounts it reached) instead of the number of followers. Professional accounts find this figure in Instagram's insights. This variant answers a different question, the interest generated among those who actually saw the content. Whichever method you choose, stick to it from one month to the next so the numbers stay comparable.
A worked example
An account has 2,000 followers. Its last ten posts received an average of 60 likes and 5 comments.
(60 + 5) ÷ 2,000 × 100 = 3.25%
Which benchmarks to use
There is no official standard. These are the orders of magnitude our engagement rate calculator uses for Instagram, for guidance only:
- under 1%: low
- from 1% to 3.5%: average
- from 3.5% to 6%: good
- above 6%: excellent
In this example, 3.25% falls in the average zone, close to good. These benchmarks move with the topic and the size of the account: small accounts often show higher rates than very large ones, simply because their audience is closer to them. Compare yourself to your own past first, then to accounts of a similar size and topic.
What makes the rate vary
- The format. A Reel, a carousel and a photo do not trigger the same reactions. Calculate the rate per format to find out which one works for you.
- The topic. Some subjects naturally attract more comments than others.
- Regularity. An account that posts at regular intervals gets its audience used to reacting.
- How active the followers are. Inactive followers, or followers not interested in your subject, count in the denominator without ever reacting.
Why your follower count changes the result
The engagement rate is divided by the number of followers. If that number rises while interactions do not, the rate falls mechanically.
Take the example again. The 65 interactions are unchanged, but the account goes from 2,000 to 3,000 followers:
65 ÷ 3,000 × 100 = 2.17%
The rate went from 3.25% to 2.17% without the content changing. This applies to followers gained naturally as well as bought ones: a bought follower does not like or comment. If you ordered followers, note the quantity and the date so you can interpret the evolution of your rate correctly.
Conversely, bought likes increase the numerator and push the rate up without reflecting your audience's real interest. In both cases, the most useful thing is to know what your numbers contain before comparing them to another account's.
How to improve it
- Work on the first seconds of a Reel and the first line of the caption. That is what decides whether someone stops.
- Ask a question at the end of the caption. A clear call to answer gives a reason to comment.
- Reply to comments quickly. A conversation that has started encourages the next ones.
- Test formats and posting times, then keep what works according to your own numbers.
- Post for a specific audience rather than for everyone: a targeted audience reacts more.
For more levers, see How to improve your visibility on Instagram.
Calculate yours in 30 seconds
Enter your follower count and the average likes and comments of your recent posts, and the calculator shows your rate and its level. If you want to strengthen the credibility of an account that is starting out, you can also read our guide to choosing between French, European or worldwide followers.