What is a Gross Rating Point (GRP) and how is it used in planning?

Study for the DMI Media Strategy Certification Exam with flashcards and multiple choice questions, each question offers hints and explanations to ensure your readiness for the test!

GRP is a metric that summarizes total audience exposure by pairing reach with frequency. It is calculated by multiplying reach (the percent of the target audience exposed at least once) by frequency (the average number of times those exposed see the message). In planning, GRP provides a single, comparable number that helps you see how intensely a plan will reach people and how often they’ll see it. This lets you compare different media plans on a common scale and track whether you’re meeting exposure targets across channels. It also helps forecast gross impressions across the entire plan (for example, 50% reach with a frequency of 4 equals 200 GRPs). It’s not about click-through rates, cost per impression, revenue forecasting, or testing ad variants—those are separate metrics or objectives.