ROAS Calculator
Calculate your Return on Ad Spend in seconds. See your ROAS ratio, ACOS, and the actual profit (or loss) your ad campaigns are generating.
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Understanding ROAS
What is ROAS?
Return on Ad Spend (ROAS) is revenue divided by advertising cost. A ROAS of 4x means every $1 of ad spend returned $4 in revenue. It is the headline efficiency metric for paid campaigns, but it measures revenue — not profit.
ROAS vs ACOS
ACOS (Advertising Cost of Sale) is the inverse of ROAS, expressed as a percentage: ad spend divided by revenue. A 4x ROAS equals a 25% ACOS. Amazon sellers tend to use ACOS; most other channels use ROAS. They describe the same relationship.
Why ROAS is not enough
A high ROAS can still lose money if your margins are thin. Your break-even ROAS depends on gross margin: at a 25% margin you need at least a 4x ROAS just to cover the product cost of advertised sales. This is why competitive pricing matters — wider margins lower the ROAS you need to stay profitable.
Protect Your Margins So Every Ad Dollar Pays Off
Price Patrol monitors competitor prices so you can price for healthy margins — the foundation of a profitable ROAS. Track competitors and reprice automatically.
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