Reach vs Impressions: What's the Difference and Which to Track
Understand the difference between reach and impressions, and how to use each metric correctly to evaluate social media performance.
Reach vs impressions defined#
Reach: the number of unique accounts that saw your content. Each person is counted once, regardless of how many times they saw it.
Impressions: the total number of times your content was displayed — one person can generate multiple impressions by seeing the same post multiple times.
Example: if 1,000 people each saw your post twice, reach = 1,000 and impressions = 2,000.
In AskBiz, both metrics appear in Social → Overview and on individual post detail pages.
When to use reach#
Use reach to answer:
- How many unique people did we reach this week?
- Are we growing our audience exposure month-over-month?
- What percentage of our followers see our posts?
Follower reach rate = Post reach ÷ Followers × 100
On Instagram, organic reach rate typically runs 5–15% of followers per post. On Facebook it can be as low as 2–5% due to algorithmic throttling of organic content. TikTok is unique — non-followers can see your content, so reach can exceed follower count.
When to use impressions#
Use impressions to answer:
- How many total times was our content displayed?
- How much frequency are our ads getting? (For paid social)
- Are people seeing our content multiple times?
For paid social campaigns, impressions are the primary volume metric. CPM (cost per 1,000 impressions) is calculated using impressions, not reach:
CPM = Ad spend ÷ (Impressions ÷ 1,000)
A high impressions-to-reach ratio (frequency > 3) in paid campaigns can signal ad fatigue — the same people are seeing your ad too many times. Time to refresh creative.
Organic vs paid reach#
AskBiz separates organic and paid reach for posts that were both posted organically and boosted with paid spend:
- Organic reach: people who saw your post without paid promotion (from followers' feeds, hashtags, explore page, shares)
- Paid reach: people who saw it because of a paid boost
For brand-building, organic reach is more valuable — it reflects genuine content resonance. Paid reach is volume you're buying. Go to Social → Posts → [Post] → Reach Breakdown to see the split.
Tracking reach growth over time#
The most meaningful reach metric is monthly unique reach — the number of unique accounts reached across all posts in a month.
Month-over-month growth in monthly reach indicates your content is gaining distribution. In AskBiz, view this in Social → Overview → Monthly Reach Trend.
Benchmark: growing total monthly reach by 5–10% per month is strong organic growth. Faster growth usually requires paid amplification or viral content moments.
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