Glossary /
Blended ROAS
Efficiency & cost
Blended ROAS
Total revenue over total spend — the one ROAS number that can't be gamed by attribution.
Attribution & Measurement
Unit Economics
Data Governance & Nomenclature
Creative & Delivery
Audiences & Targeting
Mobile & Privacy
Blended ROAS is total revenue divided by total ad spend across every channel. It's the top-line, attribution-free view of marketing efficiency that no single platform will ever report for you.
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What is Blended ROAS?
Every ad platform reports its own ROAS — and if you add up what each platform claims, you'll routinely 'credit' more revenue than your business actually earned. That's because platforms double-count the same conversions, each taking credit for a buyer who touched several channels. Blended ROAS sidesteps all of it. Take your actual total revenue from your books, divide by your actual total ad spend, and you get a number that can't be inflated by attribution games. It's the figure a CFO trusts because it ties to the bank account. The limitation: blended ROAS doesn't tell you which channel drove what — it's a top-line health check, not an allocation tool. The right move is to track blended ROAS as your ground truth, then use incrementality and MMM to allocate within it. If channel-reported ROAS looks great but blended ROAS is sliding, your platforms are lying to you.
Blended ROAS formula
Blended ROAS = Total Revenue ÷ Total Ad Spend (all channels)
Blended ROAS = Total Revenue ÷ Total Ad Spend (all channels). Total revenue comes from your actual sales data, not any platform's attribution. Total spend is everything you put into paid media across every channel. Because both numbers are real totals, the result can't be inflated by double-counted conversions.
Worked example
One month across every paid channel.
Total Revenue (all channels)
$600,000
Total Ad Spend (all channels)
$150,000
Blended ROAS
4.0x
$600,000 ÷ $150,000 = 4.0x
No platform reports blended ROAS — you compute it from total revenue over total spend. It is the honest top-line number.
Blended ROAS formula
Blended ROAS = Total Revenue ÷ Total Ad Spend (all channels)
Blended ROAS = Total Revenue ÷ Total Ad Spend (all channels). Total revenue comes from your actual sales data, not any platform's attribution. Total spend is everything you put into paid media across every channel. Because both numbers are real totals, the result can't be inflated by double-counted conversions.
Worked example
One month across every paid channel.
Total Revenue (all channels)
$600,000
Total Ad Spend (all channels)
$150,000
Blended ROAS
4.0x
$600,000 ÷ $150,000 = 4.0x
No platform reports blended ROAS — you compute it from total revenue over total spend. It is the honest top-line number.
How Blended ROAS differs across ad platforms
Meta
Meta only reports ROAS on conversions it attributes to itself, and counts view-through generously — so it claims a slice of buyers other channels also claim. It cannot see or report your blended number.
Google Ads
Google reports its own attributed ROAS and likewise takes credit for cross-channel buyers, especially via branded search. Like every platform, it has no visibility into your true top-line.
Your books / consolidated reporting
Blended ROAS can only come from outside the platforms — your actual total revenue over your actual total spend. No ad seller computes it because no ad seller wants you to see how much of its claimed credit overlaps everyone else's.
Common Blended ROAS misconceptions
I can get blended ROAS by adding up each platform's reported ROAS.
You can't. Platforms double-count shared conversions, so summing their claimed revenue overstates reality. Blended ROAS uses one true revenue total over one true spend total — not a sum of self-reported platform figures.
Blended ROAS replaces channel-level measurement.
It doesn't tell you which channel worked — it's a top-line truth check. Use blended ROAS as ground truth, then use incrementality and MMM to allocate budget within it. They're complementary, not substitutes.
Frequently Asked Questions
What is Blended ROAS in simple terms?
Blended ROAS is the simplest honest measure of efficiency: every dollar of revenue your business made divided by every dollar you spent on ads, across all channels combined. Because it uses real totals, no platform's attribution math can inflate it.
How is Blended ROAS calculated?
Why does Blended ROAS differ across ad platforms?
How does Clarisights report on Blended ROAS?
Attribution & Measurement
Unit Economics
Data Governance & Nomenclature
Creative & Delivery
Audiences & Targeting
Mobile & Privacy
Blended ROAS is total revenue divided by total ad spend across every channel. It's the top-line, attribution-free view of marketing efficiency that no single platform will ever report for you.
?
?
What is Blended ROAS?
Every ad platform reports its own ROAS — and if you add up what each platform claims, you'll routinely 'credit' more revenue than your business actually earned. That's because platforms double-count the same conversions, each taking credit for a buyer who touched several channels. Blended ROAS sidesteps all of it. Take your actual total revenue from your books, divide by your actual total ad spend, and you get a number that can't be inflated by attribution games. It's the figure a CFO trusts because it ties to the bank account. The limitation: blended ROAS doesn't tell you which channel drove what — it's a top-line health check, not an allocation tool. The right move is to track blended ROAS as your ground truth, then use incrementality and MMM to allocate within it. If channel-reported ROAS looks great but blended ROAS is sliding, your platforms are lying to you.
Blended ROAS formula
Blended ROAS = Total Revenue ÷ Total Ad Spend (all channels)
Blended ROAS = Total Revenue ÷ Total Ad Spend (all channels). Total revenue comes from your actual sales data, not any platform's attribution. Total spend is everything you put into paid media across every channel. Because both numbers are real totals, the result can't be inflated by double-counted conversions.
Worked example
One month across every paid channel.
Total Revenue (all channels)
$600,000
Total Ad Spend (all channels)
$150,000
Blended ROAS
4.0x
$600,000 ÷ $150,000 = 4.0x
No platform reports blended ROAS — you compute it from total revenue over total spend. It is the honest top-line number.
How Blended ROAS differs across ad platforms
Meta
Meta only reports ROAS on conversions it attributes to itself, and counts view-through generously — so it claims a slice of buyers other channels also claim. It cannot see or report your blended number.
Google Ads
Google reports its own attributed ROAS and likewise takes credit for cross-channel buyers, especially via branded search. Like every platform, it has no visibility into your true top-line.
Your books / consolidated reporting
Blended ROAS can only come from outside the platforms — your actual total revenue over your actual total spend. No ad seller computes it because no ad seller wants you to see how much of its claimed credit overlaps everyone else's.
Common Blended ROAS misconceptions
I can get blended ROAS by adding up each platform's reported ROAS.
You can't. Platforms double-count shared conversions, so summing their claimed revenue overstates reality. Blended ROAS uses one true revenue total over one true spend total — not a sum of self-reported platform figures.
Blended ROAS replaces channel-level measurement.
It doesn't tell you which channel worked — it's a top-line truth check. Use blended ROAS as ground truth, then use incrementality and MMM to allocate budget within it. They're complementary, not substitutes.
Frequently Asked Questions
What is Blended ROAS in simple terms?
Blended ROAS is the simplest honest measure of efficiency: every dollar of revenue your business made divided by every dollar you spent on ads, across all channels combined. Because it uses real totals, no platform's attribution math can inflate it.
How is Blended ROAS calculated?
Why does Blended ROAS differ across ad platforms?
How does Clarisights report on Blended ROAS?
See Viewable Impression across every channel in one report
See Viewable Impression across every channel in one report
See viewability and vCPM across every platform—display, video, programmatic— in one normalized report, instead of reconciling vendor numbers by hand.
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