MER Calculator
What's Your True Marketing Efficiency?
Your Marketing Efficiency Ratio (MER) and Blended ROAS (return on ad spend) are the same number. See the true return on every marketing dollar — every channel, no attribution guessing.
Your Metrics
MER Performance
Add your monthly totals to calculate MER.
- Total revenue (last 30–90 days)
- Total ad spend across every paid channel
Values update as you type.
Frequently asked questions
Common questions about MER, Blended ROAS, and marketing efficiency
Learn These Key Metrics
Total revenue divided by total marketing spend, providing a holistic view of mar...
The revenue generated for every dollar spent on advertising....
The total cost of acquiring a new paying customer, including all marketing and s...
The time period during which a conversion can be credited to an ad interaction....
Keep going
ROAS Calculator
See your return on each channel after product costs — not just your overall ad return.
Calculate your true ROASMeta Budget Calculator
Size your ad budget from a revenue goal and expected ROAS.
Plan your Meta budgetContribution Margin Calculator
See what each order actually contributes after all variable costs.
Find your per-order profit
Want to push MER higher without shrinking spend?
We help brands scale ad spend while holding or growing MER through retention-layered strategies. Free strategy call — no pitch, just clarity.