Blended CPM: Cost Per 1,000 Impressions Across Channels

Track your cost per 1,000 ad impressions across Meta, Google, and TikTok. Learn the formula, see examples, and optimize your reach efficiency.

How much you pay for every 1,000 times your ads are shown across all channels.

Formula

Blended CPM = ( Blended Spend ÷ Blended Impressions ) × 1,000

Formula Components

Metric	Definition
Blended Spend	Total amount spent on advertising across all platforms
Blended Impressions	Total number of times ads were displayed across all platforms

Metadata
Type	Currency
Data Source	Meta Ads, Google Ads, TikTok Ads
Aggregation	Ratio

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Example

Your campaigns spent $15,000 and generated 3,000,000 impressions this month:

Channel	Spend	Impressions	CPM
Meta Ads	$8,000	1,600,000	$5.00
Google Ads	$5,000	1,000,000	$5.00
TikTok Ads	$2,000	400,000	$5.00
Blended	$15,000	3,000,000	$5.00

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How It Works

Blended CPM aggregates your total ad spend and impressions across all connected advertising platforms, then calculates the cost per 1,000 impressions. This gives you a single efficiency metric for your entire paid media program regardless of channel mix.

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When to Use

Scenario	Action
Comparing reach efficiency	Benchmark your blended CPM against industry averages
Budget planning	Estimate required budget based on target impression volume
Channel mix optimization	Compare blended CPM to individual platform CPMs
Seasonal analysis	Track how CPM fluctuates during peak advertising periods

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Related Metrics

Metric	Relationship
Blended Spend	The numerator in CPM calculation
Blended Impressions	The denominator in CPM calculation
Blended CPC	Cost efficiency measured by clicks instead of impressions

See all Blended Audience metrics →