GRP Calculator

GRP (Gross Rating Point) is the standard unit of media impact. It calculates the relationship between Reach and Frequency.

Percentage of target audience reached at least once

Average number of times a person sees the ad

Total Gross Rating Points

Results

Resulting GRP
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Enter at least two values to calculate.

How we calculate it

GRP = Reach (%) × Frequency
Reach = GRP / Frequency
Frequency = GRP / Reach

Example

If you reach 50% of the audience with an average frequency of 3.0, you have 150 GRP.

What is GRP?

GRP (Gross Rating Point) is a measure of advertising weight. It represents the total number of impressions delivered as a percentage of the target population.

Optimal values

  • Product Launch: 800-1200 GRP/month
  • Brand Awareness: 400-600 GRP/month
  • Maintenance: 200-400 GRP/month

Frequently Asked Questions (FAQ)

Can GRP be higher than 100?

Yes, and it usually is. GRP is a cumulative value. 200 GRP simply means that the "sum of all views" equals 200% of the population (e.g., 50% Reach × 4.0 Frequency).

What is an ideal GRP for a campaign?

It depends on the goal. For a new product launch (Launch), 800-1200 GRP per month is often recommended. For maintenance (Reminder), 200-400 GRP may suffice. Reach is usually prioritized over frequency in the beginning.

What is the difference between GRP and TRP?

TRP (Target Rating Point) is the same as GRP, but calculated specifically for a defined target audience (e.g., Women 25-45). GRP usually refers to the total population (12+ or 15+).

Why it matters

GRP is the common language of TV and radio planners. It allows comparing campaigns across different media. Without GRP, you wouldn't know if your campaign is loud enough to be noticed or if you are just "whispering" in a noisy market.

Understanding the relationship between Reach and Frequency helps you optimize campaign strategy. High reach with low frequency builds awareness. High frequency with lower reach drives action.

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