Skip to main content
Google Frequency measures the average number of times each person saw your Google ads.

Formula

Google Frequency = Google Impressions ÷ Reach

Formula Components

MetricDefinition
Google ImpressionsTotal number of times your Google ads were displayed
ReachNumber of unique people who saw your ads
Metadata
TypeNumber
Data SourceGoogle Ads
AggregationRatio

Example

A skincare brand running Google Display campaigns sees 125,000 impressions reaching 25,000 unique users during a product launch.
MetricValueCalculation
Google Impressions125,000Total ad displays
Reach25,000Unique viewers
Google Frequency5.0125,000 ÷ 25,000
Each person saw the ad an average of 5 times during the campaign.

How It Works

Google calculates frequency by dividing total impressions by the number of unique users reached. This metric only counts unique people—if someone sees your ad on multiple devices, they’re counted once. High frequency can lead to ad fatigue, reducing campaign effectiveness over time.

When to Use

ScenarioAction
Frequency above 7-10Refresh creative or expand targeting to reduce ad fatigue
Low frequency with high reachIncrease frequency caps to boost message retention
Brand awareness campaignsTarget 3-5 frequency for optimal recall
Retargeting campaignsMonitor closely—higher frequency acceptable but watch for diminishing returns

MetricRelationship
Google ImpressionsNumerator in the frequency calculation
See all Google Audience metrics →