What this calculator can tell you
It calculates the formula from the values you enter. It does not verify that currencies, attribution semantics, product mappings, or cost inputs are compatible.
Free calculator
MER Calculator
MER is a blended business-level efficiency ratio. Keep currencies and date ranges compatible before dividing store revenue by paid-media spend.
MER = total revenue ÷ total ad spend
ResultEnter values
The calculator will show a result once the required denominator or baseline is greater than zero.
What Metrico adds
Metrico can apply the same question to synchronized Shopify and supported paid-media data while keeping the relevant account, currency, mapping, and inventory context available.