Blended Cost per Conversion: Acquisition Cost Across Channels

Track your cost per conversion across all advertising channels. Measure how much you spend on average for each conversion event attributed to your ads.

Blended Cost per Conversion measures the average cost for each conversion event attributed to your advertising across all connected platforms.

Formula

Blended Cost per Conversion = Blended Spend ÷ Blended Conversions

Formula Components

Metric	Definition
Blended Spend	Total advertising spend across all connected platforms
Blended Conversions	Total conversion events attributed across all channels

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

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Example

Your store spent $18,000 across all advertising channels in April and generated 1,200 total conversions (including purchases, leads, and registrations).

Channel	Spend	Conversions	Cost/Conversion
Meta	$9,000	650	$13.85
Google	$6,000	380	$15.79
TikTok	$3,000	170	$17.65
Blended	$18,000	1,200	$15.00

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How It Works

Blended Cost per Conversion aggregates total ad spend and total conversion events from Meta, Google, and TikTok, then calculates the average cost per conversion. Unlike CPA which focuses specifically on purchase conversions, this metric includes all conversion types—purchases, leads, registrations, app installs, and other configured goals.

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When to Use

Scenario	Action
Measuring overall ad efficiency	Track cost to drive any conversion action
Comparing conversion costs across platforms	Identify which channels convert most efficiently
Budget allocation decisions	Shift spend toward lower cost-per-conversion channels
Multi-goal campaign optimization	Evaluate campaigns driving various conversion types

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Related Metrics

Metric	Relationship
Blended Spend	Numerator — total ad spend across platforms
Blended Conversions	Denominator — total conversion events
Blended CPA	Purchase-specific version (Spend ÷ Purchases)

See all Blended Conversions metrics →