Updated Ads & Marketing

MER Calculator

Calculate Marketing Efficiency Ratio (MER / blended ROAS), compare it to targets, and run scenarios using net revenue adjustments and optional margin inputs.

MER / Blended ROAS Marketing % of Revenue Targets & Scenarios CSV Export

Marketing Efficiency Ratio Toolkit

Use total revenue and total marketing spend to measure blended performance, then set targets that match your unit economics.

Tip: If you track both platform ROAS and MER, use MER to validate whether channel ROAS is translating into real business efficiency.
Use this tab to reverse-engineer goals: required revenue for a target MER, maximum marketing spend for a target MER, and an estimated break-even MER from margin.
Tip: If your estimated break-even MER is 3.0 and your target MER is 4.0, you’re planning a buffer for profit and volatility.
Generate scenarios to see how MER changes as spend increases or decreases against the same revenue baseline.

Quick Steps

  1. Enter total revenue and total marketing spend for the same timeframe.
  2. Adjust revenue for returns, discounts, and included tax if you want a net view.
  3. Click Calculate to see MER and marketing % of revenue.
  4. Use Targets to compute required revenue or allowable spend for your goal MER.
  5. Use Scenarios to stress-test your MER against different spend levels.
Common usage: MER for weekly executive view, ROAS for channel optimization, and margin-based targets for profitability guardrails.

Related Calculators