Cost per thousand impressions (technically, “cost per mille”).
The CPM model refers to advertising bought on the basis of impression. This is in contrast to the various types of pay-for-performance advertising, whereby payment is only triggered by a mutually agreed upon activity (i.e. click-through, lead, sale).
The total price paid in a CPM deal is calculated by multiplying the CPM rate by the number of CPM units. For example, one million impressions at $10 CPM equals a $10,000 total price.
1,000,000 / 1,000 impressions = 1,000 units
1,000 units X $10 CPM = $10,000 total price
CPM Calculators – the calculators above, with more in-depth context.
CPM vs. CPC Calculator – useful for Facebook ads and other social ads.
Marketing Calculators – a growing collection of best-in-class calculators.
Display Advertising Stats 2019: SEMrush Study
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Marketing Land (November 26, 2013)
CPM vs CPC: Which Should You Use For Facebook Ads?
Adweek (September 9, 2010)
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ClickZ (January 25, 2001)
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Display Benchmarks – wow!
Google Rich Media Gallery