The Social Media Tracker offers an engagement rate metric for measuring levels of engagement on Facebook, Twitter, Google Plus, and YouTube.
Total engagement is the sum of all audience interactions on a social network over your set date range, and we use this as a part of our calculation of engagement rate.
Since social media can allow a user that is not part of a page’s audience to interact with posts, there would be no way to accurately scale this metric from 0-100 with the data that is publicly available to SEMrush.
Engagement rate can be useful for comparing two posts from one profile or two posts from competing profiles. The rate represents how much engagement the social profile was able to get relative to the size of their audience and amount of posts.
This way, you can compare the effectiveness of a Facebook post from a profile with a large audience to a competing Facebook post from a profile with a small audience.
The formula we use to calculate engagement rate number is:
<total engagement rate> = <total engagement> / <number of posts> / <audience> * 10000
Engagement rate can be calculated for an entire profile or a single post. To calculate for a single post, the <number of posts> in the equation above would be 1.
Please note: the rate is not scaled to 100 so it is perfectly normal to see an engagement rate above 100 if the post is highly engaging.
Since each network has different ways to engage people, we measure engagement differently on each network. By default, the date range in the tool is set to the past 7 days, but it can be adjusted to measure engagement over a longer or shorter period of time. Total engagement on each network is calculated in the following way:
Facebook: sum of shares, likes, reactions (wow's, sad's, angry's, etc), and comments made on all posts during the selected time period.
Twitter: sum of all likes, retweets, and mentions of twitter handle during the selected time period.
Google Plus: sum of post +1s, reshares, and comments made on all posts during the selected time period.
YouTube: sum of likes, views, and comments made on all videos during the selected time period.
LinkedIn: sum of likes, clicks, shares, and comments on all posts during the selected time period.