Definition
CPM is the cost to deliver 1,000 impressions. It's the baseline pricing unit for many display and video campaigns.
Formula
CPM = Spend ÷ Impressions × 1000
How to use CPM
- Compare inventory and audiences before you optimize for clicks or conversions.
- Convert CPM → CPC using CTR, then CPC → CPA using CVR.
Tool: Use the CPM Calculator.