First month of Pro is free for early-access sign-ups. Use code FREEMONTH 🎉
Get startedMER
Marketing efficiency ratioTotal revenue as a multiple of total marketing spend — your whole-engine efficiency.
MER (marketing efficiency ratio) is total revenue divided by total marketing spend across all channels — the same figure as blended ROAS. It answers ‘for every dollar we put into marketing, how much revenue came back?’ across the business, not one campaign.
Formula
MER = Total revenue ÷ Total marketing spend
Example: $120,000 ÷ $29,000 = 4.14× MER.
What a good result depends on
Judge MER against your break-even ROAS and its trend, not a universal target.
Common mistakes
- Expecting a single ‘good’ MER — it's margin-dependent.
- Confusing MER with per-channel ROAS.