Ad Frequency Risk Checker
Grade your impressions-per-user against safe, caution and fatigue thresholds.
3.6× is fatigue territory. CTR decays and CPMs climb as the algorithm forces the same people. Expand the audience or rotate creative now.
Healthy frequency varies by objective, prospecting tolerates less repetition than retargeting, where 4–7× can be fine.
About this calculator
Frequency is the metric most likely to catch you after the CPA damage is already done, since it's a lagging signal you only check when performance dips. This calculator computes your current average frequency directly from impressions and reach, and grades it against healthy, caution and fatigue bands so you can catch the trend before CTR decays and CPMs climb.
How to use it
- Enter total impressions for the period.
- Enter reach, the number of distinct, unique people who saw the ads.
- Read your average frequency and its risk band, and the implied impressions per user per week.
Methodology
Average frequency is impressions ÷ reach, the average number of times each unique person in the audience saw the ad over the period.
The calculator bands frequency into three tiers: below 2x is healthy, 2x to 3.5x is caution (diminishing returns beginning), and 3.5x and above is fatigue risk (where CTR decay and CPM increases typically show up).
Impressions per user per week divides the average frequency by 4.33, assuming the reporting period spans roughly a month, to translate the raw frequency figure into a weekly pace that's easier to compare against a target cadence.
These bands are general prospecting guidance. Retargeting and remarketing audiences, where repeated exposure to a warm audience is often the point, comfortably tolerate much higher frequency, 4-7x or more, without the same fatigue signal.
FAQ
A cold audience seeing the same ad repeatedly tends to tune it out faster since there's no existing relationship or intent to reinforce. Retargeting audiences already have some familiarity or purchase intent, so higher repeated exposure (4-7x) is often productive rather than wasteful there.
Look at CTR and CPM trend lines over the same period, if they're degrading alongside frequency, that's confirmation rather than coincidence. Have new creative ready to rotate in before frequency climbs into the fatigue band.
No, it's an audience-wide average. Because delivery algorithms tend to over-serve their highest-propensity users first, a meaningful portion of the audience often sits well above the average frequency shown here, actual fatigue can be arriving faster for your core audience than the average suggests.
Expand the audience so the same impression volume spreads across more unique people, lower daily budget or delivery pace on that specific audience, or introduce genuinely new creative rather than a minor variation, since creative fatigue and frequency fatigue often compound each other.