How this tool works.
ACOS = advertising spend / attributed advertising revenue × 100. ROAS = attributed advertising revenue / advertising spend.
Put it into practice.
Spend of 200 against 1,000 in attributed advertising revenue gives ACOS of 20.00% and ROAS of 5.00×.
Examples use illustrative amounts in a single currency. Results are estimates, not guaranteed outcomes or marketplace quotations.
Make the most of this tool.
Can ACOS exceed 100%?
Yes. ACOS exceeds 100% when advertising spend exceeds attributed revenue. At zero attributed revenue the ratio is undefined, so the calculator explains that instead of displaying infinity.
How is this result calculated?
ACOS = advertising spend / attributed advertising revenue × 100. ROAS = attributed advertising revenue / advertising spend.
Are my inputs saved or sent to Fulfillio?
No. This tool calculates in your browser. It does not submit your values, save scenarios or send calculation results to Fulfillio. Refreshing the page clears your entries.
Can I use this without a Fulfillio account?
Yes. This is a free standalone tool. You do not need to sign in or provide an email address. The tool does not connect to your marketplace accounts.
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