Facebook Engagement Rate Calculator — Free Tool

You posted a great photo last night. By morning it has 1,200 impressions and 90 likes + comments + shares. Was that a hit — or just noise? The Facebook Engagement Rate Calculator answers that in seconds. Enter your post reach (or impressions), the total engagements, and — if you want — your follower count. The calculator returns the engagement rate so you can judge performance and improve future posts.

Why engagement rate matters

Engagement rate measures how well your content connects with people who see it. Likes, comments and shares are signals that the post resonated. Engagement rate is:

• Actionable — tells you if content attracts interaction, not just views.
  
• Comparable — lets you compare posts, formats, or campaigns fairly.
  
• Decision-ready — guides whether to boost a post, repeat a format, or try something new.
  

High reach with low engagement often means content is visible but not compelling. High engagement on low reach suggests strong relevance to a small audience. Both insights are useful.

What to enter

• Post Reach or Impressions — the number of unique people who saw the post (reach) or total times the post was shown (impressions). Use reach when available; impressions are fine if reach is not.
  
• Total Engagements — sum of likes, loves, reactions, comments, shares, saves, and other interactions you count. Enter the combined total.
  
• Followers (optional) — your page or profile followers. Useful for a follower-based engagement rate (see formulas). Leave blank to calculate by reach/impressions only.
  

The formulas

There are three common engagement rate formulas. Use the one that matches your data:

1. Engagement rate by reach (recommended when reach available)
   

Engagement Rate (%) = (Total Engagements ÷ Reach) × 100

2. Engagement rate by impressions
   

Engagement Rate (%) = (Total Engagements ÷ Impressions) × 100

3. Engagement rate by followers (useful for brand comparison)
   

Engagement Rate (%) = (Total Engagements ÷ Followers) × 100

Note: multiply by 100 to express as a percentage. Round to 1–2 decimal places for readability.

Step-by-step: how the calculator works

1. You paste or type the reach (or impressions).
   
2. You add the total engagements.
   
3. (Optional) You enter followers if you want that metric too.
   
4. The tool applies the correct formula and shows engagement rate(s).
   
5. The result includes a quick interpretation (low / average / good) and tips for improvement.
   

Worked examples

Example A — Using reach

• Reach = 1,200
  
• Engagements = 90
  Engagement Rate = (90 ÷ 1,200) × 100 = 7.5% → Very strong for organic Facebook.
  

Example B — Using followers

• Followers = 10,000
  
• Engagements = 90
  Engagement Rate = (90 ÷ 10,000) × 100 = 0.9% → Average; suggests post reached only a small segment or was boosted by limited distribution.