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Google ROAS measures how much revenue you earn for every dollar spent on Google Ads.

Formula

Formula Components

MetricDefinition
Google Purchases ValueRevenue from purchases attributed to Google Ads
Google SpendTotal amount spent on Google Ads
Metadata
TypeMultiplier (displayed as Nx)
Data SourceGoogle Ads
AggregationRatio

Example

Your Google Ads campaign generated $12,500 in revenue from $2,500 in ad spend:
MetricValue
Google Purchases Value$12,500
Google Spend$2,500
Google ROAS5.0x
A 5.0x ROAS means you earned $5 in revenue for every $1 spent on Google Ads.

How It Works

Google ROAS divides revenue from purchases attributed to your Google Ads by your total ad spend. A ROAS of 3x means $3 in revenue per $1 spent. Higher ROAS indicates more efficient advertising performance.

When to Use

ScenarioAction
Evaluating campaign profitabilityCompare ROAS against your target (e.g., 3x minimum)
Optimizing budget allocationShift spend toward campaigns with higher ROAS
Testing ad creativesMeasure which variations drive better returns
Setting bid strategiesUse target ROAS bidding in Google Ads

MetricRelationship
Google SpendThe denominator in the ROAS calculation
Google Purchases ValueThe numerator in the ROAS calculation
Google CPACost efficiency metric—lower CPA often correlates with higher ROAS
See all Google Efficiency metrics →