You can create a Reach report to see the number of unique visitors in your Google Ad Manager network.
Reach report data represents the number of unique visitors exposed to different advertisers, orders, line items, or ad units in your Google Ad Manager network over a given time period. Reach report data is available for up to 1 year.
Reach reports don't include impressions from Ad Exchange or AdSense, and only shows data about your reservation traffic.
Create a Reach report
Create your own report, or use one of the Reach report templates with dimensions and metrics selected for you. For instructions to use templates, go to Start a report from a template .
- Sign in to Google Ad Manager.
- Click Reporting, then Reports.
- Click New report.
- Under "Report type", click
and select Reach. Click Done.
- Select a date range.
- Select one or more dimensions
and metrics
: Note:One of the following dimensions might be required depending on the Unique Reach metric desired: "Ad unit ID", "Line item", "Order", or "Advertiser". Other dimensions may also be required if the report is broken down by specific time periods.
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Total unique visitorsThe total unique audiences reached by the ad and exposed to different advertisers, orders, line items, or ad units in your network. This metric is the result of de-duplication of individual users across many platforms. It's not limited to the number of web cookies or mobile identifiers (IDFAs AdIDs) for in-app environments.
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Total reach impressionsThe total impressions for the unique audiences reached by the ad.
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Average impressions/unique visitor
The estimated total number of impressions for each unique visitor your network reached. Represents how frequently an ad was viewed by your audience. Available only when the "Country" dimension is included in your report.
Calculated by dividing "Total ad impressions" by "Total reach."
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(Optional) Click Add filterto narrow the report results. Your Reach report supports filtering by ad unit, order, advertiser, line item, or country.
Select the dimensions before you filter your Reach report results. - (Optional) Schedule and share your report .
- Click Run.
Data availability timeline
We have improved Reach report metrics to make them compatible with arbitrary date ranges.
Reach report data is generated for all networks at the end of each day, based on the US/Pacific time zone. However, it may take up to 3 days for data to be available in Ad Manager.
How Google calculates reach
Previously, Google Ad Manager relied on cookies to calculate reach. Now, reach is calculated using a collection of data from various devices, employing statistical models that combine behavior observations with other signals and account for co-viewing.
Due to this change in calculation and the use of different methodologies, data appearing in your Google Ad Manager Reach report may not be directly comparable to data from other platforms or even previous versions of Google Ad Manager Reach reports or your Historical report. Each platform has its own way of calculating unique reach, and direct comparisons should be avoided.
Even if no new impressions are generated, reach steadily increases. For extended campaigns, line items, or queries, the actual rate of increase may slow down over time.
Supported countries
Reach reports can be used to analyze data generated by campaigns targeting supported countries.
List of supported countries
- United States
- Canada
- United Kingdom
- Argentina
- Australia
- Austria
- Bahrain
- Belgium
- Brazil
- Bulgaria
- Canada
- Chile
- Colombia
- Costa Rica
- Croatia
- Czech Republic
- Denmark
- Dominican Republic
- Ecuador
- Egypt
- El Salvador
- Estonia
- Finland
- France
- Germany
- Greece
- Guatemala
- Honduras
- Hong Kong
- Hungary
- India
- Indonesia
- Iraq
- Ireland
- Israel
- Italy
- Japan
- Jordan
- Kazakhstan
- Kenya
- Kuwait
- Latvia
- Lebanon
- Lithuania
- Malaysia
- Mexico
- Morocco
- Netherlands
- New Zealand
- Nicaragua
- Nigeria
- Norway
- Oman
- Pakistan
- Panama
- Peru
- Philippines
- Poland
- Portugal
- Puerto Rico
- Qatar
- Romania
- Russian Federation
- Saudi Arabia
- Serbia
- Singapore
- Slovakia
- Slovenia
- South Africa
- South Korea
- Spain
- Sweden
- Switzerland
- Taiwan
- Thailand
- Turkey
- Ukraine
- United Arab Emirates
- Uruguay
- Venezuela
- Vietnam
FAQ
Expand all Collapse allWhen values are less than 50, a hyphen ("-") means Ad Manager's algorithms can't calculate unique visitors in a statistically significant, privacy-safe way.
Frequency capping in Google Ad Manager is primarily an optimization goal applied at the device/cookie level, while Reach reports calculate average impression frequency per unique user across multiple devices using probabilistic and deterministic models.
This means a user might be exposed to an ad on different devices or browsers, and each exposure could count towards the frequency cap individually. However, the Reach report may consolidate these exposures under a single unique user, potentially showing a higher average impression frequency than the set cap.
Therefore, you should not directly compare the average impression frequency from Reach reports with your line item's frequency cap settings. The "Average impressions/unique visitor" metric in the Reach report reflects an estimate of how frequently an ad was viewed by your deduplicated audience.

