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Get startedBlended ROAS
MERTotal revenue divided by total ad spend across every channel.
Blended ROAS is total revenue (all channels, including organic) divided by total ad spend across all platforms. Unlike per-platform ROAS, it counts each sale once, so it's the honest read on whether your whole marketing engine pays off. It's the same figure most people call MER.
Formula
Blended ROAS = Total revenue ÷ Total ad spend
Example: $120,000 revenue on $29,000 total spend = 4.14× blended ROAS.
What a good result depends on
Depends on margin — a 60%-margin brand can thrive at 2.5×, a thin-margin brand may need 4×+.
Common mistakes
- Comparing blended ROAS to per-platform ROAS — blended is always lower because it removes double-counting.
- Ignoring organic revenue, which flatters the number.