Frequency is how many times the average person sees your ad. Around 1 to 3 is often effective. Too high a frequency causes ad fatigue, so watch your numbers as you scale spend.
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Ad frequency is the average number of times each person sees your ad. It is one of the most useful numbers in paid media because it tells you whether you are reaching new people or hammering the same audience over and over. The calculator above turns your impressions and reach into a frequency in one step, then shows the impressions you need to hit your target.
The formula is simple: divide total impressions by reach. Impressions are the total number of times your ad was shown. Reach is the number of unique people who saw it at least once. So frequency equals impressions divided by reach.
Say a campaign served 600,000 impressions to 200,000 unique people. Divide 600,000 by 200,000 and you get a frequency of 3. The average person in that audience saw your ad three times over the period you are measuring. The same relationship works in reverse: if you know your reach and the frequency you want, multiply them to find the impressions you need. To hit an average of 3 across 200,000 people, you need 600,000 impressions.
There is no single perfect number, but ranges help. For awareness and prospecting campaigns, an average frequency of about 1 to 3 over a week or two is a sensible target. It is enough repetition for people to remember you without wearing them out. Retargeting can run a little higher, often 3 to 5, because that audience already knows your brand and is closer to buying.
The warning sign is frequency that keeps climbing with no fresh creative. Once the same people see the same ad past roughly 5 to 7 times, click-through rate tends to fall, cost per result rises, and some people start tuning the ad out or finding it irritating. That is ad fatigue, and it quietly burns budget. Watch frequency alongside your performance metrics rather than in isolation, because the right ceiling depends on your audience size, creative variety and how long your campaign runs.
Two levers keep frequency in a healthy range. The first is frequency caps. Most ad platforms let you set a limit on how many times one person sees your ad per day or week, which stops a small audience from being over-served while you scale spend. The second is fresh creative. Rotating in new images, hooks and formats resets attention, so even when frequency is high the experience feels new rather than repetitive. If your frequency is creeping up and results are sliding, widen your audience or refresh the creative before you simply spend more. Paid reach has a ceiling like this, which is one reason it pays to build organic visibility that earns repeated exposure without paying per impression.
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