Blended Cost Per Share: Measure Ad Sharing Efficiency

Blended Cost Per Share measures the average cost to generate one share of your ads. Meta and TikTok are the platforms that report shares, so only their spend counts.

Formula

Blended Cost Per Share = ( Meta Spend + TikTok Spend ) ÷ Blended Shares

Formula Components

Metric	Definition
Meta Spend	Spend from your Meta ad accounts
TikTok Spend	Spend from your TikTok ad accounts
Blended Shares	Shares of your ads, as Meta and TikTok report them

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

Example

Your campaigns ran on all three platforms this month:

Platform	Spend	Shares	Counted in this metric
Meta	$2,500	1,800	Yes
TikTok	$2,500	700	Yes
Google	$1,000	Not reported	No
Blended Cost Per Share	$5,000	2,500	$2.00

Dividing Blended Spend ($6,000) by the same 2,500 shares would give $2.40, charging Google’s budget to shares it didn’t report.

How It Works

Upstack adds Meta and TikTok spend and divides by the shares those two platforms report. Google Ads doesn’t report shares, so its spend is left out. In the app the formula reads Meta + TikTok Spend ÷ Shares. If you run Google Ads, this metric won’t equal Blended Spend ÷ Blended Shares.

When to Use

Scenario	Action
Optimizing for shareability	Find which creative assets generate shares most cheaply
Budget allocation	Compare Meta and TikTok cost per share before shifting budget
Campaign planning	Set a target cost per share for awareness campaigns

Metric	Relationship
Meta Spend and TikTok Spend	Numerator
Blended Shares	Denominator
Blended Cost Per Engagement	Broader engagement cost, on all spend

See all Blended Engagement metrics →

​Formula

​Formula Components

​Example

​How It Works

​When to Use

​Related Metrics

Formula

Formula Components

Example

How It Works

When to Use

Related Metrics