Analytics

Ad Frequency

The average number of times a unique user sees your ad during a campaign.

Definition

Frequency measures how many times, on average, each unique person in your audience sees your advertisement. It is the ratio of total impressions to unique reach. Frequency is a critical lever in campaign management. Too low and your message may not break through; too high and you risk ad fatigue, where audiences ignore or actively dislike your ad from overexposure. The optimal frequency depends on the campaign objective, ad format, and industry — but most platforms recommend a frequency of 2–5× for awareness campaigns.

Formula

Frequency = Total Impressions ÷ Unique Reach

Divide the total number of ad impressions by the number of unique people who saw the ad.

Example

Your campaign delivers 500,000 impressions to 100,000 unique users. Frequency = 500,000 ÷ 100,000 = 5.0. Each person saw your ad an average of 5 times.

Key Points

Frequency caps on Meta and other platforms prevent ad fatigue
Retargeting campaigns intentionally run high frequency to maintain top-of-mind awareness
Declining CTR as frequency rises is a sign of ad fatigue — rotate creative
Different audience sizes demand different frequency strategies