Definition
CPM
CPM, cost per mille, is what an advertiser pays for a thousand ad impressions. RPM and CPM describe the same thousand impressions from the two sides of the transaction, and revenue share sits between them.
A rising CPM does not automatically mean a rising RPM, because it depends on how many impressions are actually served and how the revenue is shared.
Tools that use this term
AdSense Revenue Calculator
Estimate ad revenue from pageviews, ad density and RPM, with a monthly and yearly total.
RPM Calculator
Work out RPM and CPM from revenue, and what each thousand impressions is worth.
Blog Revenue Calculator
What a blog earns from ads, affiliates and products, and what each visitor is worth.