MER Calculator (Marketing Efficiency Ratio)
Total revenue against total marketing spend, across every channel.
Your numbers
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.