Cost Per Mille (Thousand Impressions)
CPM (Cost Per Mille) measures the cost of 1,000 ad impressions. It is one of the most common metrics in digital advertising. Formula: CPM = (Total Cost / Impressions) x 1,000. A lower CPM means you are reaching more people for less money. Average CPMs vary by platform: Google Display $2-$5, Facebook $5-$10, LinkedIn $30-$50.