Reach Formula:
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Reach and frequency are key metrics in media planning that measure the percentage of a target audience exposed to an advertising message (reach) and the average number of times those reached are exposed to the message (frequency).
The calculator uses the reach formula:
Where:
Explanation: This formula calculates the percentage of the total population that has been exposed to an advertising message at least once, based on the total impressions and average frequency.
Details: Calculating reach helps advertisers understand the breadth of their campaign's audience coverage, optimize media budgets, and measure campaign effectiveness in terms of audience penetration.
Tips: Enter impressions as a total count, frequency as an average number, and total population as the size of your target audience. All values must be positive numbers.
Q1: What's the difference between reach and impressions?
A: Reach measures the number of unique people exposed, while impressions count the total number of exposures (including repeats to the same people).
Q2: What is a good reach percentage?
A: This varies by industry and campaign goals, but typically 70-90% is considered excellent for mass market campaigns.
Q3: How does frequency affect reach?
A: Higher frequency means the same people see the message more times, which may reduce reach if the media budget is fixed.
Q4: Can reach exceed 100%?
A: No, reach represents a percentage of the population and cannot exceed 100%.
Q5: How often should reach be measured?
A: Reach should be monitored throughout a campaign to optimize media placement and ensure target audience coverage.