OOH Impressions Estimator
This estimator converts raw traffic and footfall data into audience-weighted OOH impressions using adjustment factors for visibility, dwell time, and demographic composition. It is designed for OOH planners and independent media buyers who need to evaluate placements without direct access to a Geopath account or equivalent audience measurement system. The tool shows the impression calculation step by step so you can understand and explain the methodology to clients or stakeholders.
Inputs
Results
How this is calculated
Enter the daily vehicle or pedestrian traffic count for your location, the format type, average vehicle occupancy or group size, and demographic composition estimates, and the estimator applies visibility and audience adjustment factors to produce a daily and monthly audience impression figure.
Every model runs locally in your browser. Nothing you type is sent anywhere.
Frequently asked questions
How are OOH impressions measured?
OOH impressions in the US are primarily measured by Geopath, an industry organization that aggregates traffic data, travel surveys, and eye-tracking research to produce Visibility-Adjusted Contacts for each billboard and OOH unit in its database. The methodology converts vehicle counts and pedestrian traffic into opportunity-to-see figures adjusted for factors including vehicle speed, viewing angle, display size, and clutter. International markets use equivalent systems with varying methodologies.
What is daily effective circulation for a billboard?
Daily Effective Circulation, or DEC, is the estimated number of people who have a reasonable opportunity to see a billboard on a typical day. It is derived from traffic count data and adjusted for factors like the percentage of traffic heading in the direction that faces the display, average vehicle occupancy, and visibility range. DEC is the standard unit used by the OOH industry to price inventory and is the basis for CPM calculations.
How accurate are OOH impression estimates?
OOH impression estimates are approximations based on traffic data and modeling assumptions. Geopath's methodology is audited and peer-reviewed, making it the most reliable standard available, but it still relies on modeled inputs rather than individual-level measurement. Independent estimates like those produced by this tool are useful for planning and evaluation but should be treated as directional figures, particularly for locations or formats not covered by Geopath's database.