Paid Advertising
Ad Frequency
Ad frequency is the average number of times a single person sees your ad over a given period. It measures repetition rather than total exposure, helping advertisers gauge whether an audience is being reinforced effectively or shown the same ad too often.
Why it matters
Some repetition aids recall, but excessive frequency causes ad fatigue, falling engagement, and rising costs. Monitoring frequency helps you balance memorability against annoyance and wasted spend.
How it is measured
Frequency = total impressions / total reach (unique people). Example: 30,000 impressions delivered to 10,000 unique people = 30,000 / 10,000 = a frequency of 3.
Typical benchmarks
Tolerable frequency depends on campaign length and objective; awareness pushes sustain higher repetition, while frequency climbing into the high single digits on a small audience often signals fatigue.
Frequently asked questions
What is a good ad frequency?
There is no fixed ideal; it varies by goal and flight length. Watch for the point where engagement drops and CPM rises as the same people see the ad repeatedly. That inflection signals fatigue more reliably than any single number.
How is frequency different from reach?
Reach is the number of unique people who saw your ad. Frequency is how many times, on average, each of them saw it. Impressions equal reach multiplied by frequency.
How do I reduce ad fatigue from high frequency?
Set frequency caps, expand your audience, rotate fresh creative, and exclude people who already converted. These reduce repetitive exposure and keep performance healthy.