What Is eCPM? Formula, Benchmarks & How to Increase It │CAS.AI
If you're a publisher, eCPM (effective cost per mille) is the revenue you earn for every 1,000 ad impressions. It's calculated with a simple formula: divide total ad revenue by total impressions, then multiply by 1,000. Unlike CPM, a fixed price that advertisers agree to upfront, eCPM reflects what you actually earned after accounting for fill rate, bids, and everything else. But the number alone means little without context. A $1.50 eCPM for a banner in Latin America is not the same as a $1.50 eCPM for rewarded video in the US. Format, geography, platform, and seasonality all move the needle. For publishers, the most reliable way to push eCPM higher? Competition. The more networks bidding on each impression in real time, the better your realized revenue. Publishers who switch to independent mediation typically see revenue per user jump 1.5–2x. That's not theory; that's what the data shows.
