ROAS Calculator
Return on ad spend, ACOS & ad profit
Running paid ads? Enter the revenue an ad generated and what you spent to see your ROAS, ACOS and the profit left after ad costs.
What ROAS tells you
ROAS (return on ad spend) is revenue divided by ad spend — a 4× ROAS means every $1 of ads brought in $4 of revenue. ACOS (advertising cost of sale) is the inverse as a percentage, popular on Amazon. Remember ROAS measures revenue, not profit: factor in product cost and margins before celebrating a high number.
ROAS Calculator: frequently asked questions
What is a good ROAS?
It depends on your margins, but many businesses aim for at least 3–4× to stay profitable after product and overhead costs. Thin-margin products need a higher ROAS.
What's the difference between ROAS and ACOS?
ROAS is revenue ÷ ad spend (a ratio); ACOS is ad spend ÷ revenue (a percentage). They're two views of the same relationship.