Facebook Reach Calculator - Estimate Organic and Paid Post Reach

Facebook Reach Calculator

Estimate how many people your next Facebook post will reach. Calculate organic reach based on your engagement rate, plus paid reach from your boost budget — all in one place.

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Organic Estimate
Based on your engagement rate and content type multiplier
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Paid Reach
Estimate how far your boost budget will stretch by audience location
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Viral Reach
Accounts for shares and secondary reach from engaged users
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Cost per Person
Know exactly what you spend to reach each additional person

What Is Facebook Reach and Why Does It Decline Over Time?

Facebook reach is the number of unique people who see your content at least once. It differs from impressions, which count every time your post is displayed regardless of whether it is the same person. Reach is a better measure of actual audience exposure, and it is the foundation for calculating your engagement rate — both of which Facebook's algorithm uses to decide how widely to distribute your next post.

Organic reach on Facebook has fallen dramatically since 2014. Early pages could expect to reach 16% or more of their followers organically. Today, the typical organic reach for a Facebook page post is 2% to 6% of followers. Pages with smaller, more engaged audiences often outperform this average, while large pages with passive followers can see organic reach drop below 1%. This decline is largely by design — Facebook monetizes reach through paid promotion.

Reels and video content consistently achieve higher organic reach than text or photo posts because Facebook's algorithm rewards content formats that keep users on the platform longer. If growing your organic reach is a priority, shifting toward video and Reels content is the most impactful change you can make without spending on ads.

Facebook Organic Reach Benchmarks by Page Size

These are approximate organic reach rates (as a percentage of followers) observed across Facebook pages in 2024–2025:

Page Size Typical Organic Reach % Example (10% engagement) Notes
Under 10,0008% – 15%800 – 1,500 peopleSmall pages get proportionally higher reach
10,000 – 100,0003% – 8%3,000 – 8,000 peopleMid-size average — video helps significantly
100,000 – 1M1% – 5%10,000 – 50,000 peopleAlgorithm throttles organic to push paid
Over 1M0.5% – 2%5,000 – 20,000 peopleVery large pages rely heavily on boosting

How to Increase Your Facebook Organic Reach

  1. Post Reels Consistently: Reels receive the highest organic reach of any content format on Facebook right now. Even repurposing existing content as Reels can significantly extend your reach.
  2. Optimize Posting Times: Use Facebook Insights to identify when your audience is online and schedule posts for those peak windows. Timing has a measurable impact on early engagement, which drives further distribution.
  3. Encourage Meaningful Interactions: Comments and shares signal quality to Facebook's algorithm far more than reactions alone. Ask questions that invite real responses rather than just likes.
  4. Go Live Regularly: Facebook Live consistently receives 6x more reach than regular video. Even short, informal lives can reset your page's algorithm standing after a slow period.
  5. Cross-Post to Groups: Sharing content in relevant Facebook Groups (that you own or are approved to post in) multiplies your reach without additional ad spend.