The term eCPM stands for ‘effective cost per mille’ and is used to describe the ad revenue generated per 1,000 ad impressions. eCPM is used to compare ad monetization earnings across variables, such as ad network, ad unit, region, OS, location, and more. eCPM is calculated by dividing your total advertising earnings by the total number of impressions your app served, then multiplying by 1,000.
eCPM = (total earnings/total impressions) x 1,000
Check out industry eCPM averages by ad unit and location.
Learn more about eCPM.