What Is Marketing Efficiency Ratio (MER)?
Marketing Efficiency Ratio divides total store revenue across all channels by total ad spend across all platforms.
Formula & calculation
MER = Total Store Revenue / Total Cross-Platform Ad Spend
Practical example
Spending 5,000 USD across three ad platforms while generating 25,000 USD in total store revenue yields a 5.0x MER.
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AdsRanger (2026). What Is Marketing Efficiency Ratio (MER)?. Retrieved 13 November 2026, from https://adsranger.com/en/glossary/mer.
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