Free Instagram Reach Calculator
Enter up to 3 posts.
4.8 on G2 · 4.8 on Capterra · 400M+ creators indexed
For Reels enter views. For static posts leave views empty and enter likes and comments.
We estimate reach per format from your recent post performance. At least 1,000 followers required.
Followers are who could see a post. Reach is who did.
On Instagram, only a fraction of an audience sees any given post. Estimating reach from real posts gives a far better sense of how many people a partnership might reach than the follower count alone.
Reach ≠ followers
Instagram shows posts to a slice of the audience. Reach reflects what actually lands.
Estimate before you pay
Get a directional reach estimate so a fee maps to likely audience, not vanity size.
Live from real posts
Base the estimate on up to three actual posts instead of a flat assumption.
How it works
Add up to three posts
Enter your follower count, plus the view, like and comment counts from up to three recent posts.
Estimates update live
The reach range recalculates as you add or change posts.
Read the range
See the estimated number of unique accounts a comparable post could reach.
Plan the spend
Use the estimate as one input when you size a fee, then move to vetting.
Reach calculator vs guessing from follower count
| Criterion | Guessing from followers | Reach Calculator |
|---|---|---|
| Basis | A flat percentage of followers | Up to three real posts |
| Accuracy | One blunt assumption | An estimate grounded in actual performance |
| Update | Static | Estimates update live as you add posts |
| Speed | Back-of-envelope math | An instant estimate |
Reach vs engagement vs authenticity
A grounded reach estimate, instantly
Live estimate
Reach figures update the moment you add or change a post.
Up to three posts
Base the estimate on a small sample of real content.
No login required
Run the calculator without an account or install.
Reach range
Translate audience size into a realistic reach range.
Campaign planning
Map a creator fee to the reach it can plausibly deliver.
Multi-platform path
Carry the same thinking to TikTok and YouTube creators.
Client expectations
Use the estimate to set expectations with a client or manager.
Path to vetting
Move a promising account into deeper audience analysis.
Frequently asked questions about Instagram reach
How is reach calculated?
From the views, likes and comments you enter for up to three recent posts, compared with the follower count. It is a directional estimate, useful for triage before outreach.
Why does this estimate differ from my Instagram Insights reach?
Instagram Insights shows the exact reach for the creator's own account, but that figure is not shared publicly. This calculator estimates it from the post numbers you enter.
Is the calculator free?
Yes. No signup and no card.
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