Free tools

Calculate, compare, decide.

Simple browser-only tools for evaluating advertising performance. Figures are estimates, not guarantees.

Amazon ACOS

Advertising cost of sales = ad spend ÷ attributed ad sales × 100.

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Amazon TACOS

Total advertising cost of sales = ad spend ÷ all sales × 100.

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Breakeven ROAS

Breakeven return on ad spend = 1 ÷ pre-ad contribution margin.

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