Blended ROAS (MER) calculator
This free blended ROAS calculator divides total revenue by total ad spend and, because a ROAS number alone says nothing about profit, uses your gross margin to place the break-even point and a target with room for profit. Everything runs in your browser; nothing you type leaves the page.
Blended ROAS (MER) calculator
Enter your numbers. Blended ROAS = total revenue divided by total ad spend. Gross margin tells you where your break-even sits.
Blended ROAS divides by actual total revenue, so tracking loss (iOS, cookies) never shrinks it. It tells you whether marketing is efficient, not which channel earned it.
How the blended ROAS calculator works
- Blended ROAS (MER) = total revenue / total ad spend, across every platform at once.
- Break-even ROAS = 1 / gross margin. Below this, every ad-driven sale loses money.
- Target ROAS = break-even × 1.4, leaving room for actual profit rather than survival.
- Gross profit per €1 of ad spend = blended ROAS × margin, minus 1.
Blended ROAS divides by actual total revenue, so tracking loss (iOS, cookie consent) never shrinks it, which is why it survives when platform-reported ROAS numbers disagree. What it cannot do is credit individual channels. The full explanation, including when MER misleads, is in our blended ROAS and MER guide.
From one blended number to profit per campaign
MER tells you whether marketing as a whole earns; it cannot say which campaign does. Enalitica computes your break-even from real cost data and shows POAS (profit on ad spend) next to ROAS for every campaign, where break-even is always simply 1.0. The POAS guide explains the difference.
Frequently Asked Questions
What numbers do I need for the blended ROAS calculator?
Three numbers: total revenue for the period, total ad spend across all platforms for the same period, and your gross margin. Revenue and spend come straight from your store and ad accounts; gross margin is revenue minus COGS, shipping and fees, divided by revenue.
Why does the blended ROAS calculator ask for gross margin?
Because a ROAS number alone cannot tell you whether ads are profitable. Break-even ROAS = 1 / gross margin: at a 45% margin, break-even sits at 2.22x, so a 3x blended ROAS earns money while the same 3x at a 25% margin (break-even 4x) loses money on every ad-driven sale.
Does the blended ROAS calculator store my numbers?
No. The whole calculation runs in your browser; nothing you type is sent to a server, stored, or shared. Refreshing the page resets the inputs to the example values.