CPM Calculator Website
Measure website display inventory on a per-thousand-impression basis for publisher revenue or advertiser cost planning.
Calculate cost per thousand
Choose one consistent impression unit: individual ad impressions for ad CPM, or pageviews only when the rate is explicitly a page RPM.
Symbols only; values are not converted.
Example values are prefilled—edit either available input.
i
The total amount spent or earned for the impressions in this calculation.i
The number of times the advertisement or placement was delivered.i
Cost per mille: the cost or revenue for every 1,000 impressions.How this calculation works
Choose one consistent impression unit: individual ad impressions for ad CPM, or pageviews only when the rate is explicitly a page RPM.
Example calculation
£600 across 200,000 website ad impressions equals a £3.00 CPM.
Change either input in the calculator to model a different campaign scenario.
Use the result correctly
- Keep pageviews and ad impressions separate.
- Account for unfilled inventory when forecasting revenue.
- Compare placements with similar viewability and formats.
Frequently asked questions
What does cpm calculator website calculate?
It calculates CPM, total cost, or impressions from any two known values. The page also explains the formula in the context of choose one consistent impression unit: individual ad impressions for ad cpm, or pageviews only when the rate is explicitly a page rpm.
What formula does cpm calculator website use?
Website CPM = (ad cost or revenue ÷ website ad impressions) × 1,000.
Is cpm calculator website free to use?
Yes. The calculator runs in your browser and does not require an account.