Enter a post's (or a month's) likes, comments, shares and saves, choose what to divide by, and get the engagement rate with the working shown.
—%
Enter your numbers to see the engagement rate.
Engagement rate = (likes and reactions + comments + shares + saves) ÷ base × 100
The base is your choice:
| Base | Answers the question | Typical use |
|---|---|---|
| Impressions | How engaging was the post to the people it was shown to? | Comparing posts; PostRoost’s analytics use this |
| Reach | How many of the people who saw it engaged? | When the network reports unique reach |
| Followers | How engaged is the audience overall? | Comparing accounts of different sizes |
Rates calculated with different bases cannot be compared with each other. Pick one and use it consistently.
The calculator also works without JavaScript: press Calculate and the page shows the result.
10 questions
There is no universal benchmark: rates vary by network, audience size, format and the base you divide by. Compare a brand with its own previous periods, using the same formula each time.
Impressions to compare posts, reach when the network reports unique reach, followers to compare accounts of different sizes. Pick one and keep it.
People can engage more than once, and when the base is followers rather than viewers, a post can collect more engagements than the account has followers.
Networks report clicks inconsistently, so mixing them in makes rates hard to compare. If your goal is traffic, calculate a separate click rate.
Yes. Add up the month's likes, comments, shares and saves, and divide by the month's total impressions, reach or followers.
Likes or reactions, comments, shares and saves. Networks name these differently, but they map to the same four fields.
Only if they use the same base. A rate by followers and a rate by impressions cannot be compared with each other.
Engagements divided by impressions, shown as a percentage for the period you choose.
Yes. Thousands separators such as 1,250 are fine. Empty interaction fields count as 0, and the base must be above 0.
Yes. Press Calculate and the page shows the result with the working.
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