How do you calculate engagement rate?

Divide total engagements (likes, comments, shares, saves) by your chosen audience number, then multiply by 100. The audience number is normally reach, impressions or followers, and you should state which one you used.

Which engagement rate should I report?

Engagement rate by reach is the most defensible, because it measures response among people who genuinely saw the content. Whichever you choose, use the same one every time or your trend line is meaningless.

Engagement rate calculator: by reach, impressions and followers

EngagementsLikes, comments, shares, saves.Reach (unique people)Impressions (total views)Followers

Engagement rate by reach7.1%

Engagement rate by impressions4.7%

Engagement rate by followers3.4%

ER by reach = Engagements ÷ Reach · ER by impressions = Engagements ÷ Impressions · ER by followers = Engagements ÷ Followers

In short

Engagement rate is engagements divided by an audience number, expressed as a percentage. The catch is that there are three different denominators in common use: reach (unique people), impressions (total views) and followers. They give different answers from the same post, so the only rule that matters is picking one and reporting it consistently.

Three denominators, three different answers

Reach counts unique people, impressions count total views, and followers counts an audience that may never have seen the post at all. The same 850 engagements can produce three noticeably different percentages depending on which you divide by, which is exactly why agency reports and influencer media kits so often disagree.

Engagement rate by reach is usually the most honest, because it answers a real question: of the people who actually saw this, how many did something. Engagement rate by followers is the most flattering and the easiest to game, which is why it shows up in pitch decks.

Frequently asked questions

How do you calculate engagement rate?: Divide total engagements (likes, comments, shares, saves) by your chosen audience number, then multiply by 100. The audience number is normally reach, impressions or followers, and you should state which one you used.
Which engagement rate should I report?: Engagement rate by reach is the most defensible, because it measures response among people who genuinely saw the content. Whichever you choose, use the same one every time or your trend line is meaningless.

Other free tools

ROAS calculatorFree ROAS calculator. Enter ad spend and revenue to get return on ad spend, plus the break-even ROAS your margin actually requires.Break-even ROAS calculatorFree break-even ROAS calculator. Enter your gross margin to find the exact return on ad spend you need before a campaign makes any profit.CPA calculatorFree CPA calculator. Enter spend, clicks and conversions to get cost per acquisition, cost per click and conversion rate in one place.AOV calculatorFree average order value calculator. Enter revenue and orders to get AOV, plus the CPA headroom a higher AOV buys you.

Stop calculating this by hand

Muze reads these numbers straight out of your Meta, Google, Amazon and Shopify accounts and tells you which campaigns are below break-even. Ask it from ChatGPT or Claude. Every change previews before it runs.

See how Muze works