Free tools
Amazon Break-even ACOS Calculator
Find the exact ACOS where your ads stop being profitable. Everything is calculated in your browser.
Break-even ACOS 41.7%
$12.50 profit per unit before ad spend.
Any ACOS above 41.7% means you lose money on each sale.
Frequently asked questions
What is break-even ACOS?
Break-even ACOS is the advertising cost of sale at which your ad spend exactly equals your profit before ads. Spend above it and each sale loses money; below it and each sale earns profit.
How is break-even ACOS calculated?
It is your profit per unit before ad spend divided by your sale price. Profit before ads is the sale price minus product cost, Amazon referral fee, fulfillment fee, and any other per-unit costs.
Is this calculator free?
Yes. It runs entirely in your browser, needs no account, and nothing you type is sent to any server.