What is Gross Rating Point (GRP)?

Gross Rating Points (GRPs) are the standard currency for measuring the weight of an advertising campaign across media channels. The formula is straightforward: GRP = Reach (%) x Frequency. A campaign that reaches 40% of the target audience an average of 5 times delivers 200 GRPs. This metric allows media planners to compare the total advertising pressure across different media — television, radio, digital, and outdoor — making it essential for integrated campaigns that need a common measurement framework.

In the Egyptian outdoor advertising market, GRPs are increasingly used by multinational brands and media agencies that apply global planning standards to local campaigns. A Ring Road billboard network delivering 60% reach with a frequency of 8 over a 30-day period generates 480 GRPs — a figure that can be weighed against television GRPs to determine the optimal media mix. Agencies like Publicis, GroupM, and Dentsu operating in Cairo use GRP-based planning frameworks to allocate budgets across channels and justify OOH's role in the media plan with quantifiable evidence.

Calculating GRPs for OOH requires reliable audience data — specifically, reach and frequency estimates for each billboard location. This data comes from traffic counts, audience measurement studies, and increasingly from mobile location analytics. The challenge in Egypt has been the inconsistency of traffic data across different operators and locations, but this is improving as measurement standards are adopted and technology-driven data collection replaces manual counting methods.

GRP targets vary by campaign objective and product category. A new product launch in Egypt might target 800-1200 GRPs across all media to achieve sufficient awareness and trial. The OOH component might contribute 200-400 of those GRPs, with the remainder from television, digital, and social media. For established brands maintaining awareness, lower GRP targets of 300-600 across all media may suffice, with OOH providing ongoing frequency through long-running billboard campaigns.

One important consideration is that GRPs measure pressure, not efficiency. A campaign delivering 500 GRPs at a cost of 1 million EGP is more efficient than one delivering 500 GRPs at 2 million EGP, even though the gross audience pressure is identical. This is why GRPs should always be evaluated alongside cost metrics like CPM to provide a complete picture of campaign value.

SkylineDOOH supports GRP-based planning by providing the underlying data — estimated impressions, reach, and frequency — for each billboard in its marketplace. When media planners assemble multi-location proposals on the platform, the aggregate data helps calculate approximate GRPs for the outdoor component of an integrated campaign, bringing outdoor advertising closer to the measurability standards that advertisers expect from other channels.