Reach, Frequency & GRP

Pick the metric to solve, enter the other two — get GRP, audience reached, budget and an effective-frequency gauge.

What do you want to calculate?

Total impressions

Unique reach (people)

Average frequency

Audience size (optional)

Estimated CPM (optional)

€

Result

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Effective frequency

0251015+

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Est. GRP

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% audience reached

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Est. budget

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One formula, three answers

Offline and digital media share one core equation: Impressions = Reach × Frequency. Pick the metric you need, enter the other two, and the tool solves it — then adds the GRP, the % of your audience reached and an estimated budget from your CPM.

Read the effective-frequency gauge

Frequency is where campaigns are won or wasted. Under 2× and your message barely registers; 2–5× is the sweet spot for most campaigns; 5–10× suits launches and peak moments; beyond ~10× you risk saturation and creative wearout. The gauge places your campaign instantly.

Frequently asked questions

Which metric should I solve for?

Solve for Impressions when you have a reach + frequency goal; for Reach when you have a fixed impression volume; for Frequency to check exposure on an existing plan.

How is the budget estimated?

Budget = (impressions ÷ 1000) × CPM. Enter your channel's CPM to get a directional spend figure.

Is reach the same as people?

We treat reach as unique people. Some platforms count unique devices or cookies instead, so real-world reach can differ slightly.

Let's build your media plan

We calibrate reach, frequency and GRP to your goals and budget. For free.

Request my free audit