GRP Calculator — Gross Rating Points Calculator for TV & CTV Planning
Calculate gross rating points (GRPs) from reach and frequency. Includes TRP vs GRP guidance, DMA rating point conversion, and CTV/linear planning benchmarks.
Gross rating points (GRPs) are the traditional TV planning currency — one GRP equals 1% of the target audience reached once. Modern media planning uses GRPs across linear TV, CTV, and increasingly cross-platform audience-based buying (often called TRPs, or Target Rating Points). This calculator computes GRPs from any reach and frequency combination and includes realistic benchmarks for different flight weights.
Percentage of target audience reached at least once.
Average number of exposures per reached person.
Gross Rating Points (GRPs)
240
Total rating points delivered across the campaign
How It Works
The formula is: **GRPs = Reach (%) × Average Frequency**. A flight that reaches 60% of the target audience at an average frequency of 4 delivers 240 GRPs. GRPs can exceed 100 — a 100-GRP buy doesn't mean 100% reach, it means rating points summed across the schedule (e.g., 50% reach × 2 frequency). Networks and TV vendors sell schedules in GRP increments. For modern CTV planning, GRPs translate into audience impressions: 1 GRP = 1% of target universe in impressions, so 100 GRPs against a 50M adult universe = 50M impressions.
Frequently Asked Questions
What is the difference between GRPs and TRPs?
GRPs (gross rating points) measure exposure against a broad demographic like Adults 18+. TRPs (target rating points) measure exposure against a specific target audience like 'women 25-54 with household income $100K+' or 'light category buyers of SUVs.' TRPs are more useful for planning because they measure against who you actually want to reach, not a generic demo. All modern audience-based TV and CTV planning (ACR-driven buys, programmatic CTV) uses TRPs.
How many GRPs do I need for a brand campaign?
Typical benchmarks by objective: Awareness launch 300–500 GRPs per 4-week flight. Sustaining campaigns 150–250 GRPs per 4-week flight. Category leaders maintaining dominance 500+ GRPs. Local DMA pushes against a narrow audience 400–800 GRPs. Political campaigns in final weeks 800–2,000+ GRPs. Below 100 GRPs, it's difficult to move brand metrics meaningfully; above 1,000 GRPs in a 4-week window, you're likely hitting diminishing returns and fatigue.
How do GRPs translate to impressions in CTV?
1 GRP = 1% of the target universe in impressions. If your target is Adults 25-54 (universe = 130 million), then 100 GRPs = 1,300,000 impressions per rating point × 100 = 130,000,000 impressions. This is how upfronts and audience-guaranteed CTV deals are priced — networks commit to a GRP level against a verified audience and deliver until the impression equivalent is met. Nielsen ONE and Comscore Total Audience are the core measurement currencies.
Are GRPs still relevant in 2026?
Yes, but with major modernization. GRPs are the universal currency between brands, agencies, and networks for upfront commitments. They also survive because they cleanly summarize reach × frequency in one number. The shift has been from household GRPs (what Nielsen historically measured) to person-level and target audience GRPs (what Nielsen ONE and Comscore CCR measure). Streaming and CTV buys are increasingly planned and bought in GRPs to enable apples-to-apples comparison against linear.
How are GRPs priced?
Cost per point (CPP) is the primary TV pricing unit — how much one rating point costs. National prime broadcast: $20,000–$60,000 per A25-54 GRP in 2026. National cable: $3,000–$15,000 per GRP. Local market CPPs scale roughly with market size and demo. CTV audience-guaranteed upfronts typically price 30–50% higher than linear CPPs because of targeting precision and premium inventory. CPP × GRPs = total cost for a TV flight.
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