Free Amazon Seller Calculators

All three of our free Amazon seller tools in one place. No sign-up, no registration — just enter your numbers and get instant results.

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Amazon FBA Profit Margin Calculator

Calculate your true FBA profit after fulfillment fees, referral fees, COGS, and inbound shipping. The most complete FBA profitability tool for sellers who use Amazon's warehouses.

  • ✓ FBA fulfillment fee by size tier
  • ✓ Referral fee by product category
  • ✓ Net profit, margin %, and ROI
  • ✓ Monthly profit projection
  • ✓ Break-even price
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Amazon Profit Margin Calculator

General profit margin calculator for all Amazon sellers. Works for both FBM (merchant fulfilled) and FBA. Includes return rate impact and monthly revenue projections.

  • ✓ Works for FBM and FBA sellers
  • ✓ Return rate cost estimation
  • ✓ Gross margin, net margin, markup
  • ✓ Monthly revenue and profit
  • ✓ ROI calculation
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Amazon TACoS Calculator

Measure your Total Advertising Cost of Sales alongside ACoS and ROAS. See your organic vs paid revenue split and understand the true business impact of your advertising spend.

  • ✓ TACoS and ACoS calculations
  • ✓ ROAS and CPO metrics
  • ✓ Organic vs paid revenue split
  • ✓ Campaign health rating
  • ✓ CTR and CVR if data available
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All results are estimates only. Our calculators use Amazon's publicly available fee data. Always verify final fees in Amazon Seller Central before making business decisions. See our full Disclaimer for details.