How to Calculate Impression Share
What is Impression Share?
Impression Share Calculator helps you measure the effectiveness and profitability of your marketing investments.
Formula
Impression Share = Impressions Won / Total Eligible Impressions × 100
Step-by-Step Guide
- 1Check Google Ads columns for eligible impressions
- 2Calculate the result using the formula
- 3Compare against benchmarks to evaluate performance
Worked Examples
Input
5000 won, 10000 eligible
Result
IS = 5000/10000 × 100 = 50%
Common Mistakes to Avoid
- ✕Not accounting for all costs in the calculation
- ✕Ignoring attribution window when measuring results
Ready to calculate? Try the free Impression Share Calculator
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