How this calculator works
Engagement rate is a ratio: the interactions on a post divided by the number of people who could have interacted, expressed as a percentage. The choice of denominator changes the answer a lot. Reach counts unique accounts that saw the post, so it is usually smaller than impressions, which count every appearance including repeats. Followers are a stable audience measure that ignores how many actually saw the post. Video views are the natural denominator for short video, where a view is counted after a few seconds of watch time. The daily rate takes engagements per post per day and divides by followers, which smooths out posts that have been live for different lengths of time.
Formula
ER by reach = engagements / reach x 100. ER by followers = engagements / followers x 100. ER by impressions = engagements / impressions x 100. ER by views = engagements / views x 100. Daily ER = engagements per post per day / followers x 100. The period total is the daily figure multiplied by the number of days.
Worked example
A post with 300 engagements and 10,000 accounts reached has an engagement rate by reach of 3 percent. The same 300 engagements against 25,000 followers is 1.2 percent by followers. If a post gains 30 engagements per day and the account has 5,000 followers, the daily engagement rate is 0.6 percent; over 30 days that is 900 engagements and a period rate of 18 percent.
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Frequently asked questions
Which engagement rate should I report?
Use the same denominator that the platform or client uses, and say which one it is. By followers is the most common for influencer pitches, by reach is better for judging content resonance, and by impressions is common in advertising. Comparing a reach rate with a follower rate is comparing different things.
What counts as a good engagement rate?
It depends on the platform, the format and the account size. Smaller accounts usually show higher percentage rates because the audience is more concentrated. Rather than chase a universal benchmark, compare like with like: same platform, same format, same period.
Do likes and comments count equally?
This page treats every interaction as one engagement. Many agencies weight saves and shares more heavily because they signal stronger intent. If you use weights, multiply each interaction by its weight before entering the total, and state the weighting in your report.
Why is the daily rate useful?
A post that has been live for a month accumulates more engagements than one published yesterday, so raw totals favour old posts. Dividing by days and then by followers gives a comparable pace, which is fairer when you are reviewing a content calendar.