Free tools
Know your numbers.
Quick calculators for the numbers that scale a Shopify store, plus the free templates our members use.
Free templates
Copy them into your Google Drive.
Also free: The List Growth Tool · EcomOS on the Shopify App Store (members)
The numbers, explained
What is ROAS?
ROAS (return on ad spend) is the revenue an ad campaign brings in divided by what you spent on it. A ROAS of 3 means $3 of revenue for every $1 of ad spend. It measures one channel, not overall profitability.
What is MER?
MER (marketing efficiency ratio) is your total store revenue divided by your total marketing spend across every channel. It shows whether your marketing as a whole is paying off, and it avoids double-counting between ad platforms.
What is a break-even ROAS?
Break-even ROAS is 1 divided by your gross margin. With a 50% margin you need a ROAS of 2 just to cover product costs; below that, every sale from ads loses money before other costs.
How do I calculate ecommerce revenue?
Revenue = sessions × conversion rate × average order value. Improving any one of the three levers grows revenue, and improving all three compounds.
Want someone to read your numbers?
Elite members get EcomOS, a daily scorecard of these numbers with AI analysis, and a Growth Advisor who tells you which lever to pull next.
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