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Ad Fill Rate Calculator

Measure the share of eligible advertising requests that were actually filled with an ad. This tool uses filled ad requests, eligible ad requests as its stated inputs. The output is reported in %, so it should be compared only with figures in compatible units. Keep eligibility definitions consistent across providers and reporting periods.

How to use this calculator

  1. Measure or look up the input for filled ad requests and check that its unit matches the field.
  2. Enter eligible ad requests. Change the supplied example numbers to match your own scenario.
  3. Read the calculation in % and review the formula and limitations below before using it to make a decision.

How to calculate ad fill rate

Fill rate = filled ad requests ÷ eligible ad requests × 100.

  • The formula uses the supplied measurements directly and returns its primary result in %. No external data or background estimates are fetched by this calculator.
  • Use consistent reporting intervals and measurement units. A different unit or different definition for one input changes the meaning of the result.

Worked examples

Worked example: Ad Fill Rate

Consider the following example input values: Filled ad requests = 84000, Eligible ad requests = 100000.

Apply the stated relationship: Fill rate = filled ad requests ÷ eligible ad requests × 100.

Using those inputs gives approximately 84 %.

Understanding the result

The result of the worked example is approximately 84 %; it is an arithmetic outcome rather than a prediction of actual conditions.

Keep eligibility definitions consistent across providers and reporting periods.

Important notes

Keep eligibility definitions consistent across providers and reporting periods.

This result reflects the entered values only. Validate filled ad requests against a relevant measurement or primary record; rounding, timing, or inconsistent units can affect practical decisions.

Frequently asked questions

What does the ad fill rate calculator measure?

Measure the share of eligible advertising requests that were actually filled with an ad.

What formula does this ad fill rate calculator use?

Fill rate = filled ad requests ÷ eligible ad requests × 100. Keep eligibility definitions consistent across providers and reporting periods.

Can I rely on this ad fill rate calculator for a final decision?

First check the input units and whether the underlying assumption is appropriate. Keep eligibility definitions consistent across providers and reporting periods. For regulated or safety-critical decisions, verify with appropriate authoritative guidance.

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This page provides a calculation tool plus explanatory information so you can understand what the result means and when the underlying method may not fit your situation.