1. What is GRP?

Gross Rating Points (GRP) measure the size of an advertising campaign by combining reach (percentage of target audience) and frequency (average number of exposures). It's a standard metric in media planning to compare the strength of different campaigns.

2. How Does the Calculator Work?

The calculator uses the GRP formula:

Where:

• \( Reach \) — Percentage of target audience exposed (0-100%)
• \( Frequency \) — Average number of times audience is exposed

Explanation: GRP quantifies total campaign exposures relative to the target population. 100 GRPs could mean 100% reach with 1 exposure, or 50% reach with 2 exposures, etc.

3. Importance of GRP Calculation

Details: GRP helps media planners compare campaigns across different media channels, allocate budgets effectively, and estimate potential audience exposure.

4. Using the Calculator

Tips: Enter reach as a percentage (0-100) and average frequency (≥0). Both values must be valid numbers.

5. Frequently Asked Questions (FAQ)

Q1: What's a good GRP value?
A: Typical campaigns range 100-600 GRPs. Less than 100 may be insufficient, while over 600 risks overexposure.

Q2: How does GRP differ from impressions?
A: Impressions count total exposures, while GRP expresses this relative to the target population size.

Q3: Can GRP exceed 100?
A: Yes, since it's reach × frequency. 200 GRPs could mean 100% reach with 2 exposures or 50% reach with 4 exposures.

Q4: What are limitations of GRP?
A: Doesn't measure engagement, quality of exposure, or account for audience duplication across channels.

Q5: How is GRP used in digital vs traditional media?
A: Concept is similar, but digital often uses more precise metrics like viewable impressions alongside GRP.