Calculate Cost per Mille (Cost per 1,000 impressions)
CPM = (Total Cost ÷ Total Impressions) × 1,000
CPM (Cost per Mille) is a digital advertising metric that represents the cost of 1,000 ad impressions. "Mille" is Latin for thousand, making CPM literally "cost per thousand." This metric helps advertisers understand how much they're paying to reach 1,000 people with their ads.
The CPM formula is straightforward: divide your total advertising cost by the total number of impressions, then multiply by 1,000. For example, if you spent $500 on an ad campaign that generated 100,000 impressions, your CPM would be ($500 ÷ 100,000) × 1,000 = $5.00.
$2.80
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$9.68
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$7.19
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$10.00
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