Calculator / Understand ads
Same revenue. Different denominator.
Use totals from the same currency, date range and reporting basis. A page, session and ad impression are different units.

02 / Follow the result
The translated metrics
- Page RPM
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- Session RPM
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- Impression eCPM
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- Impressions per page
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Use the same period and revenue basis.
One question, two scenarios
What changed?
How to read this result
Page RPM = revenue ÷ pageviews × 1,000. Session RPM = revenue ÷ sessions × 1,000. eCPM = revenue ÷ ad impressions × 1,000. Impressions per page = impressions ÷ pageviews. A zero denominator produces an undefined result.
The tool translates denominators; it does not make reports comparable when their revenue basis, currency, date window, traffic or event definitions differ. It contains no benchmark percentiles.
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The research behind the workings