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Free Amazon PPC ACOS & ROAS Calculator
Enter your ad spend and ad sales to see ACOS and ROAS instantly, and check them against your break-even ACOS so you know if a campaign is actually profitable.
ACOS = ad spend ÷ ad sales. ROAS = ad sales ÷ ad spend. Break-even ACOS is the maximum ACOS you can afford while still breaking even — it equals your pre-advertising profit margin. If your enter your own margin from the profit margin calculator above, this tells you exactly how much ad spend a campaign can absorb before it stops being profitable.
Frequently asked questions
What is a good ACOS for Amazon PPC?
It depends entirely on your profit margin before advertising. Any ACOS below your break-even ACOS (which equals that pre-ad margin percentage) is still profitable; any ACOS above it means the campaign is losing money once ad spend is factored in.
What's the difference between ACOS and ROAS?
They're the same relationship expressed two ways. ACOS (Advertising Cost of Sales) is ad spend divided by ad sales, shown as a percentage. ROAS (Return on Ad Spend) is ad sales divided by ad spend, shown as a multiple. A 20% ACOS is the same as a 5x ROAS.
What is break-even ACOS?
Break-even ACOS is the maximum ACOS a campaign can have while you still break even, and it equals your profit margin before advertising costs. You can compute that margin with the Profit Margin & Break-Even calculator.
Is this ACOS and ROAS calculator free to use?
Yes, it's completely free with no signup required, and it can also be embedded on your own blog or website.
