Blended Cost per Completed Registration: Aggregate Registration Efficiency

The average cost to acquire one completed account registration across all connected advertising platforms.

Formula

Blended Cost per Completed Registration = Blended Spend ÷ Blended Completed Registrations

Formula Components

Metric	Definition
Blended Spend	Total ad spend across Meta, Google, and TikTok
Blended Completed Registrations	Total registration completions attributed to your ads

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

Example

Your registration campaigns spent $8,000 and captured 400 completed registrations this month:

Platform	Spend	Registrations	Cost per Reg
Meta Ads	$4,000	200	$20.00
Google Ads	$2,500	125	$20.00
TikTok Ads	$1,500	75	$20.00
Blended	$8,000	400	$20.00

How It Works

Blended Cost per Completed Registration aggregates total ad spend and registration completions across all connected platforms, then calculates the combined cost per registration. This gives you a single efficiency metric for your entire registration program regardless of which platforms you use.

When to Use

Scenario	Action
Setting registration targets	Determine sustainable cost per registration based on customer LTV
Budget planning	Forecast registration volume based on available spend
Comparing periods	Track cost per registration trends month-over-month
Optimizing funnel	Reduce cost per registration by improving targeting or landing pages

Metric	Relationship
Blended Spend	Numerator in the formula
Blended Completed Registrations	Denominator in the formula
Blended CPA	Cost per acquisition (all conversions, not just registrations)

See all Blended Conversions metrics →

Blended Registrations Blended All Conversions

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​Formula

​Formula Components

​Example

​How It Works

​When to Use

​Related Metrics

Formula

Formula Components

Example

How It Works

When to Use

Related Metrics