CTV Reach & Frequency Calculator
A connected-TV plan can post a big impression number and still reach almost nobody new, because the same households see the ad again and again. This calculator separates the two things that matter: how many unique households you reach, and how many times each one sees the ad. It then tells you whether the budget is spread too thin, sized about right, or wasted on repetition.
Reach is the number of unique households that see your ad at least once. Frequency is the average number of times each of those households sees it. Enter your budget, CPM, target audience size, and the average frequency you want; the tool returns total impressions, unique reach, the share of the audience covered, the effective frequency each household actually gets, and the cost per reached household. As a rule of thumb, three or more exposures help a message stick, while more than about ten is usually wasted.
CTV Reach & Frequency Calculator inputs and result
| Target frequency | Unique reach | % reached | Cost per reached HH |
|---|
How to use this calculator
- Pick the platform or formatChoosing the inventory type loads a benchmark CPM as a starting point. It reflects typical market rates, not your specific deal, so swap in the CPM from your media plan as soon as you have it.
- Enter your budget and CPMUse working media dollars and the cost per thousand impressions for this buy. Together these set the total impressions the campaign can deliver.
- Set the target audience sizeEnter how many households or people you want to reach. Keep the unit consistent with your media plan so the reach figures line up with what your team reports.
- Choose your target frequencySet the average number of times you want each household to see the ad. The calculator uses this to split impressions into unique reach and repetition.
- Read the verdict and test the tableCheck unique reach, percent of audience covered, and effective frequency, then use the sensitivity table to see how reach and cost shift as you raise or lower the frequency target. Export it for your media plan.
RGM Expert Says
Connected TV is sold on impressions, but impressions are the wrong unit to manage a brand campaign by. We have reviewed plenty of CTV buys that delivered every impression on the insertion order and still reached a narrow slice of the target, because a small group of heavy streamers absorbed most of the frequency. The first thing we do with any CTV plan is convert the impression number into unique reach and effective frequency, which is exactly what this calculator does.
The number that settles most planning arguments is effective frequency, the average times a reached household actually sees the ad. Decades of recall research, going back to Herbert Krugman's work on exposure, point to roughly three exposures as the threshold where a message starts to register, and to sharply diminishing returns once you climb past about ten. When a plan comes in under three, the budget is usually spread too thin to land; when it runs past ten, you are paying to annoy people you have already convinced.
The practical lever is the frequency cap. Cap the number of times any one household can see the ad, and the impressions you save flow automatically into reaching new households, which lifts your unique reach and lowers your cost per reached home at the same budget. Use this tool to find the frequency that balances landing the message against buying fresh reach, then hold the campaign to it.
How it works
The math is the standard reach-and-frequency identity. Impressions come from the budget and CPM; everything else divides those impressions into how many households you reach and how often each one sees the ad.
- Impressions — the total number of ad views the budget buys at the given CPM.
- Unique reach — the number of distinct households that see the ad at least once, capped by the size of your audience.
- Effective frequency — the average number of times each reached household sees the ad; the number that decides whether the message lands or is wasted.
- Cost per reached household — the budget divided by unique reach, which is what you actually pay to put the ad in front of one home.
This is a planning model. It assumes impressions are distributed to hit your target frequency and that reach cannot exceed the audience you defined. Real delivery skews toward heavier viewers, so an uncapped campaign usually lands at a higher frequency and lower unique reach than the plan; a frequency cap pulls actual delivery back toward these figures. The three-exposure threshold is a long-standing rule of thumb from Krugman’s exposure research, not a precise law.
Why impressions alone tell you almost nothing
An impression count answers only how many times the ad played, not how many people it reached or how often each one saw it. Two CTV plans can deliver the identical number of impressions while one reaches a broad audience a few times each and the other hammers a small group dozens of times. The first builds awareness; the second wastes most of the budget. You cannot tell them apart from the impression number, which is why reach and frequency have to be reported separately.
Connected TV makes this worse than linear ever did, because streaming viewership is concentrated. A minority of households stream many hours a day, and an uncapped buy will serve them a large share of the impressions simply because they are available. The result is a plan that looks fully delivered on paper but quietly over-frequencies the heaviest viewers and under-reaches everyone else. Splitting impressions into unique reach and effective frequency exposes that imbalance before the money is spent.
Effective frequency is the discipline that ties it together. Too little and the message never registers; too much and you pay to repeat yourself to people who already got it. Knowing the effective frequency your plan will deliver, and setting a frequency cap to control it, is the difference between a CTV buy that builds reach and one that just runs up an impression total.
What to expect from CTV reach and frequency
These are directional planning ranges, not guarantees. Actual CPMs and delivery depend on your deal, targeting, and how concentrated your audience's viewing is. Use them to sanity-check a plan, then replace them with your own numbers.
| Platform / inventory | Typical CPM range (RGM) | Reach-and-frequency watch-out |
|---|---|---|
| Netflix ads | ~$20–$30 prog / $45–$65 direct | Premium tier; cap frequency to protect reach |
| Disney+ / Hulu | ~$30–$45 | Higher for live & sports adjacency |
| Amazon Prime Video | ~$25–$60 | Broad logged-in scale; varies by targeting |
| Roku | ~$25–$35 | Strong household reach; verify dedup |
| YouTube TV / CTV | ~$14–$20 | Cheaper & more stable than premium SVOD |
| Samsung / LG / Tubi / Pluto (FAST) | ~$15–$25 | Value tier; ad-tolerant audiences |
| Programmatic open exchange | ~$20–$35 | Lowest CPM, widest quality variance |
| Premium / direct-sold | ~$45–$65+ | Best scale & brand safety |
| Effective frequency target | ~3–10× | Below 3 rarely lands; above 10 is waste |
What media planners say about frequency
The impression total is a delivery receipt, not a measure of who you reached. Reach and frequency are the two numbers a media plan actually has to defend.
Around three exposures is where a message begins to register; beyond that, each additional exposure does steadily less. Frequency is a curve with a flat top, not a line that keeps paying off.