There are two ways to work out an engagement rate, and the difference between them is not a detail.
Over followers. Interactions divided by follower count. It is the more widely quoted and the
easier to game, because the denominator is a historical number that no longer describes who sees the
posts. On an account with a few years behind it, a good share of those followers are inactive.
Over reach. Interactions divided by the people who actually saw it. That is the one above. It
answers the useful question - of those who saw this, how many reacted - and it treats large and
small accounts fairly.
What counts as an interaction
Likes, comments, shares and saves. Saves and shares matter more than likes for distribution on most
networks, but for the rate they all go in the same bucket. Link clicks do not: that is a different
metric with a different job.
Reading the result
- Below 1%: the content is not speaking to the people seeing it. Before changing everything,
check the reach is not coming from paid distribution or from a post that travelled outside the
audience.
- 1% to 3%: where most brand accounts live.
- 3% to 5%: good.
- Above 5%: check the reach. High rates usually come from small samples, and a post seen by 40
people proves nothing.
The most common reporting mistake
Comparing one month's rate with another without looking at volume. Publishing less tends to raise
the average rate, because the weak posts drop out first. A rate going up while total reach falls is
bad news wearing a good face. Which is why the rate never travels alone in a report: it goes next to
reach and to the number of posts.