Engagement rate calculator
Type a post's numbers, get its engagement rate by followers and by reach. Accepts shorthand like 8.4k, works for every network, nothing to sign up for.
The two formulas, and when each one lies
- By followers: interactions ÷ followers × 100. The comparable number, since follower counts are public. Its blind spot: it punishes accounts whose posts reach beyond their followers less than it rewards small tight audiences.
- By reach: interactions ÷ accounts reached × 100. The honest read on the content itself, but it needs your insights data and cannot be compared across accounts, because reach is not public.
- Whichever you use, use it consistently. Trend beats snapshot: one post's rate is noise, thirty posts' average is a signal.
- Interactions are not equal. A save or a share is a stronger vote than a like, so two posts with the same rate can deserve very different follow-ups.
Frequently asked questions
How do I calculate engagement rate?
Add up a post's interactions (likes, comments, and if you track them, shares and saves), divide by your follower count, and multiply by 100. That is engagement rate by followers, the number most people mean. If you have the post's reach from your insights, dividing by reach instead gives the rate among people who actually saw it.
What is a good engagement rate?
It depends on your audience size and network more than any universal benchmark: small accounts routinely run several times the rate of large ones, because a bigger follower count always contains more inactive people. The comparison that actually guides decisions is your own recent average. Beat your own last 30 days and the post did well.
Should I measure engagement by followers or by reach?
By followers is the standard for comparing accounts, because everyone can compute it from public numbers. By reach is more honest about the content itself, since it only counts people who saw the post. If a post reached far beyond your followers, the by-followers rate can exceed 100%, which looks odd but just means it traveled.
Do saves and shares count as engagement?
Yes, and they are usually the strongest signals in the pile, because they cost the viewer more than a like does. Include them when your insights expose them. Just be consistent: comparing a likes-plus-comments rate against a likes-plus-everything rate tells you nothing.
Why is my engagement rate dropping as I grow?
It is close to arithmetic. Every new milestone adds followers who engage less than your early core, so the denominator grows faster than the interactions. A falling rate on a growing account is normal; a falling absolute number of interactions is the signal worth investigating.
Stop calculating posts one at a time
posthell publishes to 15 networks on schedule and pulls each post's engagement back into one view, so the comparison this calculator does by hand happens automatically, post after post.