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GRP stands for Gross Rating Point. A standard measure in advertising, it measures adverising impact. You calculate it as a percent of the target market reached multiplied by the exposure frequency.Thus, if you get advertise to 30% of the target market and give them 4 exposures, you would have 120 GRP.Now, just like most measures, you have to undestand the limitations of GRPs. standard measure in advertising, it measures adverising impact. You calculate it as a percent of the target market reached multiplied by the exposure frequency.
For example, a TV commercial that is aired 4 times reaching 40% of the target audience, would have 160 (GRP = 4 Ã 40%) i.e., GRPs = frequency Ã % reach. The formula for estimating total gross rating points is simple.Just add the individual ratings for each media vehicle you are using.or example, a TV commercial that is aired 4 times reaching 40% of the target audience, would have 160 (GRP = 4 Ã 40%) i.e., GRPs = frequency Ã % reach. The formula for estimating total gross rating points is simple.