What Is CPM (Cost Per Mille)?
Quick Definition
CPM is an advertising metric that represents the cost per 1,000 impressions (views) of an ad, commonly used in display, video, and social media advertising campaigns.
CPM stands for "Cost Per Mille" (mille is Latin for thousand). It represents how much an advertiser pays for every 1,000 times their ad is displayed. If a campaign has a $10 CPM, the advertiser pays $10 for every 1,000 impressions.
CPM is the standard pricing model for brand awareness campaigns where the goal is visibility rather than direct clicks or conversions. Display advertising, video pre-roll ads, social media reach campaigns, and programmatic advertising typically use CPM pricing.
CPM rates vary dramatically based on the platform, audience, and ad format. Facebook CPMs average $5-15, LinkedIn CPMs are $20-40 (reflecting a more valuable B2B audience), and premium website placements can range from $10-50+. Video ads generally have higher CPMs than static display ads because they're more engaging.
To calculate CPM: (Total Ad Spend / Total Impressions) x 1,000. To estimate campaign cost: (Desired Impressions / 1,000) x CPM Rate. For example, if you want 500,000 impressions at a $10 CPM, the cost would be $5,000.
Why It Matters
CPM is essential for planning and evaluating brand awareness campaigns. While CPC and CPA measure direct response, CPM measures how efficiently you're reaching your audience. A lower CPM means you're getting more eyeballs for your budget.
Comparing CPMs across platforms and campaigns helps you allocate your advertising budget more effectively. If LinkedIn has a $30 CPM but reaches your exact B2B decision-makers, it may be more cost-effective than a $5 Facebook CPM that reaches a broader, less relevant audience.
Real-World Examples
A fashion brand runs a YouTube pre-roll video campaign with a $12 CPM, reaching 500,000 potential customers for $6,000 to launch their new collection
A B2B software company compares CPMs across platforms: LinkedIn at $35 but with decision-maker targeting vs. Facebook at $8 with broader targeting, choosing LinkedIn for better qualified impressions
A local restaurant uses Facebook reach campaigns at a $6 CPM to ensure their weekend brunch promotion is seen by 50,000 people in their area
A real estate developer runs premium display ads on luxury lifestyle websites at a $25 CPM, accepting the higher cost for the quality and relevance of the audience
Related Terms
CPC (Cost Per Click)
CPC is an advertising metric that measures the average cost paid by an advertiser each time a user clicks on their ad, used to evaluate and optimize pay-per-click campaigns.
PPC (Pay-Per-Click)
PPC is an online advertising model where advertisers pay a fee each time someone clicks their ad, commonly used on search engines like Google and social media platforms.
ROI (Return on Investment)
ROI is a performance metric that measures the profitability of an investment by comparing the net profit or loss relative to its cost, expressed as a percentage.
Retargeting
Retargeting is an online advertising strategy that shows targeted ads to people who have previously visited your website or interacted with your brand, encouraging them to return and convert.
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