Metrico glossary
Blended ROAS
Blended ROAS commonly compares store revenue with total paid-media spend across the included channels.
Definition
Blended ROAS is often used as a business-level paid-growth efficiency ratio. It can reduce dependence on provider-attributed revenue by using one store-side revenue numerator, but it still does not prove which channel caused the revenue. Some teams use the term interchangeably with MER, so the exact formula and included spend should always be visible.
Formula
Blended ROAS = store revenue ÷ included paid-media spend
Example
$80,000 of Shopify revenue ÷ $20,000 of complete included paid spend = 4.0 blended ROAS.
What to remember
- Missing channel spend inflates the ratio.
- Mixed currencies need an explicit conversion basis.
- Blended ROAS is not an incrementality measure.