How do you calculate Instagram engagement rate?

The classic formula is Engagement Rate % = ((Likes + Comments) ÷ Followers) × 100. A post with 400 likes and 25 comments on a 10,000-follower account has an ER of (425 ÷ 10,000) × 100 = 4.25%.

Why calculate ER by reach instead of followers?

Only a fraction of followers actually see any given post, since Instagram's algorithm doesn't show every post to every follower. ER by Reach divides by the actual number of accounts that saw the post instead, which is a more honest measure of how compelling the content itself was to the people who saw it.

Should saves and shares count toward engagement rate?

There's no single industry standard — some brands and tools use only likes and comments, others include saves and shares since Instagram's own algorithm weighs saves heavily as a signal of content quality. This calculator lets you include or exclude them so you can match whatever definition a brand or report requires.

What is a good Instagram engagement rate?

By followers, 1%–3% is typical for larger accounts, 3%–6% is good, and above 6% is considered excellent — smaller accounts (under 10,000 followers) often see naturally higher rates since their audience tends to be more personally engaged.

Instagram Engagement Rate Calculator

(ER by Followers or Reach)

Calculate Instagram engagement rate the classic way (by followers) or the more accurate way (by reach), from likes, comments, and optional saves and shares.

Step 1 — Calculate Engagement Rate By

Total Followers

Step 2 — Post Engagement

Likes

Comments

Calculated Results

Enter your followers (or reach) and post engagement to calculate engagement rate.

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Followers vs. Reach: Two Different Engagement Rate Answers

Instagram engagement rate can mean two different numbers depending on what you divide by, and brands increasingly ask for both. The classic formula divides by total followers — simple, but it assumes every follower saw the post, which almost never happens. Dividing by reach instead answers a more honest question: of the people who actually saw this, how many engaged?

ER by Followers (Classic)

(Likes + Comments) ÷ Followers × 100

ER by Reach (More Accurate)

(Likes + Comments) ÷ Reach × 100

Instagram Engagement Rate Benchmarks

ER by Followers	Rating
Under 1%	Below Average
1% – 3%	Average
3% – 6%	Good
6%+	Excellent

These are general reference points — smaller, niche accounts commonly run higher than large accounts with broad, less personally-invested audiences.

Frequently Asked Questions (FAQ)

Yes — a single post's ER can be skewed by an unusually viral or unusually quiet moment. Most media kits and brand pitches report an average ER across the last 10–20 posts rather than a single best-case number.

TikTok's algorithm distributes videos primarily by interest rather than follower graph, so its engagement rate is usually calculated against video views instead of followers. See our TikTok Engagement Rate Calculator for that view-based approach.