CPM Calculator
Cost per mille, the price of 1,000 ad impressions. Enter any two values and the calculator solves for the third.
Solve for
Optional, for extra metrics
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How it's calculated
CPM = Ad spend ÷ Impressions × 1,000
Ad spend = CPM × Impressions ÷ 1,000
Impressions = Ad spend ÷ CPM × 1,000
- CPM is the main metric for awareness campaigns, where you pay for reach rather than clicks.
- CPMs climb in Q4 as retail advertisers compete for the same inventory.
- Compare CPM only between campaigns with the same objective and audience. Narrow targeting costs more per impression.