Social Media Reach Calculator – % Reached

Reach counts unique accounts that saw your content, while impressions count every display including repeats — one person watching three times is 1 reach and 3 impressions. Reach rate divides reach by follower count. Worked example: a post hitting 12,400 of 18,000 followers reached 69%, far above the ~20-30% organic norm, likely because the algorithm pushed it to non-followers. Track reach growth monthly: 18,000 → 21,600 followers in a quarter is 20% growth, or about 6.3% compounded monthly. Track the same post format across four weeks to separate algorithm luck from real audience growth over time.

1. 1

   Enter post reach

   Unique accounts from the platform insights.

2. 2

   Enter followers

   Follower count on the day of posting.

3. 3

   Read reach rate

   Percentage reached plus impressions ratio.

• Reporting impressions to your boss as if they were unique people

• Comparing reach rate against a different platform's norm

• Ignoring non-follower reach that Reels algorithms gift you