📺 GRP Calculator – Gross Rating Points
Calculate the Gross Rating Points (GRP) of an advertising campaign from its reach and frequency.
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What are Gross Rating Points?
Gross Rating Points (GRP) measure the total weight or exposure of an advertising campaign across a target audience, combining how many people it reaches with how often they see it.
The formula
GRP = Reach (%) × Frequency. For example, a campaign reaching 60% of an audience an average of 4 times has 240 GRPs. GRPs are widely used in traditional media planning (TV, radio, out-of-home) to compare the overall weight of different campaigns.
This calculator is for general media-planning education.
Last reviewed August 2026