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MER Calculator
Measure what your marketing returns across the whole business, with no platform attribution involved.
Your numbers
$
$
$
Agency, creative, influencers, tools
$
Optional, for new-customer MER
Starting values are examples. Replace them with your own figures.
Results
MER
3.43x
Total revenue ÷ total marketing spend
Marketing spend as % of revenue
29.2%
New-customer MER
1.29x
Total marketing spend
$35,000
The formulas
- MER = total revenue ÷ total marketing spend
- Marketing % of revenue = total marketing spend ÷ total revenue
- New-customer MER = revenue from new customers ÷ total marketing spend
How to read the result
MER uses real store revenue, so it cannot be inflated by overlapping platform attribution. It tells you whether marketing as a whole is paying back, but not which channel to scale.
Compare your MER over time rather than against a generic benchmark, because a healthy MER depends on your margins.