The problem
ACoS is often optimized without product costs, while Amazon suggested bids describe auction competitiveness rather than profitability.
Calculate the economic guardrails an ASIN can afford before you change bids or budgets.
This calculator is for Amazon sellers and PPC operators who know their basic product economics but need a defensible break-even ACoS, target ACoS, allowable ad spend per order, maximum affordable CPC, and days-of-supply view.
You can use the workbook manually or upload it to a standard browser AI such as ChatGPT or Claude for help entering assumptions and interpreting the result. Your current costs, conversion assumptions, inventory, and selling price remain your inputs.
Use this calculator when your immediate question is what an ASIN can economically afford. Use the Profitability-Aware Amazon PPC Playbook when you need the recurring operating process for campaign, search-term, budget, inventory, and change decisions.
If you also need the wider recurring product/channel profitability system, use the Seller Profitability Bundle. If your need is only the ASIN-level guardrail, this free calculator is enough.
Tested with: Amazon Sponsored Products economics and ASIN-level operating calculations.
Designed for: sellers who supply their own current cost, conversion, inventory, and selling-price assumptions.
RESOURCE DETAILS
Tested with: Amazon Sponsored Products economics and ASIN-level operating calculations.
Designed for: Sellers who supply their own current selling price, variable costs, retained-contribution target, expected conversion rate, sellable inventory, and daily unit-sales assumptions.
Use this resource within its stated scope and requirements. Read our disclaimers.