
For the available 2 calculation modes, we are using transparent, standard Instagram engagement rate formulas:
Check out this IG Reel ER calculation example as a reference:
Now, let’s say you would like to check the average engagement rates of multiple reels from an IG influencer, from which you can choose 5 videos or up to 30 videos. The calculation looks like follows:
Note that our Instagram engagement rate calculator pulls public interactions we can reliably capture. Thus, stories, DMs, and some saves may not always be available.
Use follower-based ER when:
Use views-based ER when:
Pro tip: Start with views-based ER for Reels analysis since it reflects actual content reach and engagement quality. Use follower-based ER as a secondary metric for broader account health assessment. This dual approach can give you the complete engagement picture of any Instagram profile.
Scrumball's free Instagram engagement rate calculator gives you better insights than other tools out there. We built it to help brands and marketers figure out which influencers are actually worth working with
In addition to the above, here are more Instagram engagement rate insights to help you better interpret your ER results accurately and set realistic partnership expectations. This is what we found in our comprehensive analysis regarding engagement patterns across industries and content types in 2025.
Industry Performance Varies Dramatically
Engagement Rates by IG Content Format
Use these benchmarks to contextualize your engagement rate calculations and identify high-performing influencers within your industry vertical and budget range. Access our complete Instagram Engagement Rate Research Report in 2025 for deeper insights into platform trends, geographic variations, and advanced optimization strategies that will elevate your influencer marketing campaigns.
Engagement rate is the best way to see if a creator actually influences their audience—not just how many followers they have. Checking this upfront helps you avoid paying too much for fake numbers and work with creators who genuinely connect with their fans. Here are the main benefits of checking an IG influencer's engagement stats before reaching out:
Most IG influencers with engagement rates between 2%-6% deliver about 3x better results than those accounts with suspiciously low rates from bought followers. Our Instagram engagement rate calculator gives you the info you need to make smart choices and avoid wasting money on partnerships that won't work.
If you’re choosing partners by follower count alone, you’re flying blind. Engagement rate shows how many real people actually interact with a creator’s content—likes, comments, saves, shares—not just how many accounts clicked “follow” years ago. In Instagram influencer marketing, that difference determines whether you buy just attention or solid outcomes.
Here’s the core truth: reach without response doesn’t move the needle. An account with 500K followers and a 0.5% Instagram engagement rate may deliver fewer meaningful actions than a 60K creator with a 4% ER. In general, the smaller creator often drives lower cost per engagement, stronger click-through, and more conversions because their audience is active, not passive.
Check engagement rates twice before any campaign: during initial shortlisting and right before signing contracts. For ongoing partnerships, monitor weekly for always-on programs or after each post for one-off collaborations. Monthly checks work well for maintaining your creator roster and catching performance drops early.
Yes, Instagram Reels typically generate different engagement patterns than regular posts. Reels often achieve higher reach and shares but may have lower comment depth. When using an engagement rate calculator, compare Reels against other Reels, not static posts. This ensures accurate benchmarking since Instagram's algorithm favors video content differently from photo carousels.
Scrumball's Instagram engagement calculator provides high accuracy through an up-to-date database with daily-updating mechanisms that always capture the latest Instagram metrics. Accuracy improves with more recent posts available.
Yes, fake followers can mess up engagement rate calculations. Here's what happens: someone buys fake followers to boost their numbers, but those fake accounts don't actually like or comment on posts. So now they have way more followers but the same amount of real engagement, which makes their engagement rate look terrible.
Quick tip: always check Instagram engagement rate over time (or multiple recent videos) before trusting any Instagram engagement calculator results for partnerships.