MER Calculator (Marketing Efficiency Ratio)
Total revenue against total marketing spend, across every channel.
Your numbers
Example values are prefilled. Use the same reporting period for all inputs.
MER
4x
Blended, all channels
The formula
MER = Total revenue ÷ Total marketing spend
Worked example
₹10,00,000 total revenue on ₹2,50,000 total spend = 4.0x MER.
Frequently asked
Why use MER instead of ROAS?
Platform ROAS double-counts and misses cross-channel effects. MER is the honest top-down number: everything you earned over everything you spent. Many teams steer by MER and use platform ROAS only for relative comparisons.