Ad Reach Calculator
Estimate impressions, reach, and clicks from your ad budget. Change CPM, CTR, and frequency to sanity check your media plan in seconds.
$10.00
$1$50
Estimated impressions
100,000
Estimated reach
55,556
Assumes 1.8x frequency
Estimated clicks
1,200
An ad budget doesn’t tell you much on its own. Reach and impressions do.
If you’re trying to answer “Is this enough spend to learn anything?” or “Am I about to spam the same people?”, start here. This ad reach calculator gives you a quick estimate, then lets you change the inputs until the plan looks realistic.
How to estimate ad reach
- Pick a platform and choose whether you want to model CPM or CPC.
- Enter your budget.
- Set your assumptions (CPM or CPC, plus CTR if you use CPC).
- Adjust frequency to estimate reach.
Key terms to understand
- Impressions: total ad views.
- Reach: unique people who saw the ad.
- Frequency: average views per person.
- CTR: percent of impressions that turn into clicks.
The basic math is simple:
- Reach = Impressions ÷ Frequency
- Impressions = (Budget ÷ CPM) × 1,000
What changes the numbers the most
- CPM: lower CPM usually means more impressions for the same spend.
- CPC: lower CPC usually means more clicks for the same spend.
- CTR: higher CTR turns impressions into more clicks.
- Frequency: higher frequency usually means lower reach.
One quick example (same math used in reach planning guides):
- Budget: $6,000
- CPM: $12
- Impressions: (6,000 ÷ 12) × 1,000 = 500,000
- Frequency: 2.5
- Reach: 500,000 ÷ 2.5 = 200,000