80,000 impressions from the same 9,000 people
A Kottayam furniture shop was proud of 80,000 impressions a week on a small ₹1,500-a-day Meta budget.
Reach was only 9,000, so frequency was almost 9. The same people saw the same sofa ad nearly every day, CTR halved and cost per enquiry doubled in two weeks.
Widening the radius, adding two new creatives and capping retargeting brought weekly frequency back to about 2.5 and enquiries recovered.
Illustrative example based on a common pattern in Kerala e-commerce accounts. Numbers rounded.
What reach, impressions and frequency mean
Impressions count every time an ad appears on a screen. Reach counts people, so it is always lower than impressions. Meta estimates reach, so it can differ slightly between reports.
Frequency tells you how hard you are pushing the same audience. Small audiences and big budgets push frequency up fast.
Frequency = impressions ÷ reach · CPM = spend ÷ impressions × 1,000
Calculate frequency and cost per 1,000 people
- Frequency
- 3.20
- CPM
- ₹125
- Cost per 1,000 people reached
- ₹400
About 3.2 views per person per week. For cold audiences that is high; watch for falling CTR and rising CPA, and refresh creative or widen the audience.
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Worked example
| Metric | Value |
|---|---|
| Spend | ₹10,000 |
| Impressions | 80,000 |
| Reach | 25,000 people |
| Frequency | 3.2 in 7 days |
| CPM | ₹125 |
How experienced marketers use Reach vs impressions
1. Spot audience burnout
Rising frequency with falling CTR is the classic sign of creative fatigue.
2. Plan awareness campaigns
Reach objectives buy as many different people as possible; frequency caps limit repeats.
3. Compare channels fairly
Cost per 1,000 people reached is a cleaner comparison than CPM when frequencies differ.
What good looks like
| Business type | Starting rule | Why |
|---|---|---|
| Cold prospecting (7 days) | 1.5–3 | Starting rule; watch CTR as it climbs. |
| Retargeting (7 days) | 3–6 | Warm audiences tolerate more, with fresh creative. |
| Brand awareness (7 days) | 2–3 | Use reach objective with a frequency cap. |
When the number lies
- Reach is estimated
- Meta reach is modelled, so adding up reach across ad sets over-counts people seen in both.
- Impressions aren’t views
- An impression can be a fast scroll past; look at hook rate and ThruPlays for attention.
Mistakes to avoid
Celebrating impressions alone
High numbers can hide a tiny audience seeing ads too often.
Adding reach across campaigns
You count the same people twice.
No frequency check on small audiences
Costs rise quietly as people tune out.
Related terms
Questions people ask about reach vs impressions
What is the difference between reach and impressions?
Reach is unique people who saw the ad; impressions is the total number of times it was shown, including repeats.
What is a good frequency for Facebook ads?
As a starting rule, about 1.5–3 per week for cold audiences and 3–6 for retargeting. Watch CTR and CPA rather than a fixed number.
Can impressions be lower than reach?
No. Each person reached has at least one impression.
Why does reach differ between reports?
Meta estimates reach and removes duplicates differently at campaign, ad set and ad level.
Put it into practice
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