Enter your ad spend and ad-attributed sales — get ACOS, ROAS, and a plain-English read on what they mean.
ACOS = spend ÷ sales × 100. It's the share of every ad-driven sales dollar that went to advertising. ROAS is the same number flipped: sales ÷ spend.
Whether your ACOS is good depends on your profit margin before ads — your break-even ACOS. Below break-even, ads add profit; above it, every ad sale loses money. Don't know your break-even? Use the break-even ACOS calculator first.
For the full picture — formula, benchmarks, when high ACOS is actually correct, and the five levers that lower it — read What Is ACOS on Amazon?
AdsMachine's free audit shows ACOS by campaign and keyword — plus the wasted spend and capped winners hiding in your account.
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