The engagement rate formulas
All three methods add up the same interactions and divide by a different audience number:
| Method | Formula | Best for |
|---|---|---|
| By followers | interactions ÷ followers × 100 | Comparing accounts, brand pitches |
| By reach | interactions ÷ accounts reached × 100 | Judging how well a post landed with the people who saw it |
| By views | interactions ÷ views × 100 | Reels and video posts |
Interactions usually means likes + comments + shares + saves. Some people count only likes and comments; if you compare with someone else's figure, make sure you are using the same formula.
Example: a post with 420 likes, 35 comments, 18 shares and 27 saves has 500 interactions. On an account with 12,000 followers that is 500 ÷ 12,000 × 100 = 4.17%. If the post reached 9,000 accounts, the engagement rate by reach is 5.56%.
Which method should you use?
- By followers is the number brands most often ask for, because follower count is public. It is easy to compare between accounts.
- By reach shows how compelling the content was for the people who actually saw it. Reach is only visible to the account owner, in Instagram Insights.
- By views suits Reels, which are often seen mostly by non-followers.
What is a good engagement rate?
There is no universal number. Engagement rates differ by platform, niche, format and account size, and smaller accounts usually see higher rates than very large ones. Rather than chasing an industry average, track your own rate per post format and aim to raise it month over month.
How to improve engagement
- Lead with the hook. The first line of a caption or first second of a Reel decides whether people stop.
- Ask for a specific action, such as "save this for later" or "comment your answer", rather than a generic "like and follow".
- Post saveable content. Checklists, templates and step-by-step carousels earn saves and shares, which tend to count for more than likes.
- Reply to comments quickly, especially in the first hour.
- Compare formats. Calculate the rate for carousels, Reels and single images separately and post more of what works.
For TikTok, where engagement is usually measured against views, use the TikTok engagement rate calculator.