Commercial utility
Amazon FBA Calculator
Estimate Amazon FBA profit, margin, ROI, and break-even price from selling price, costs, and fee inputs.
Interactive calculator
Model Amazon FBA unit economics
Estimate Amazon FBA profit by combining landed product cost, inbound shipping, prep, referral fee, fulfillment fee, storage, and a return reserve.
Results
Net profit
$12.99
Margin: 32.5%
ROI
64.3%
Based on inventory and fulfillment cost base.
Total cost stack
$27.00
Fee load: 67.5%
Break-even price
$24.34
How to use it
- 01Enter the selling price and the landed product cost.
- 02Add inbound shipping, prep cost, referral fee percentage, fulfillment fee, storage fee, and any return reserve.
- 03Review net profit, margin, ROI, and the break-even selling price.
Result guide
- Referral fee and return reserve are modeled as percentages of selling price.
- ROI is based on the inventory and fulfillment cost base rather than the selling price.
- This page is a planning model and does not attempt to capture every Amazon marketplace fee edge case.
About this calculator
Marketplace sellers need a fast profit model before sourcing or repricing products, so the page should stack the major FBA cost layers into one clear unit-economics view.
A useful FBA tool should also estimate break-even price because that gives sellers a clean floor for pricing decisions and ad-spend planning.
Frequently asked questions
Why include a return reserve?
Because returns, refunds, and damage allowances can materially affect real unit economics over time.
What does break-even price mean here?
It is the approximate selling price needed for profit to reach zero after the modeled cost stack is applied.
Can I use this outside the US marketplace?
Yes. The calculator is currency-agnostic as long as all inputs use the same currency.
Reviewed by Dr. Elena Rostova, MD, PhD
Medical Doctor & Clinical Nutrition Researcher
Reviews health index calculators, unit converter benchmarks, and mathematical models against WHO guidelines and peer-reviewed research.
Sources: Per WHO guidelines / Peer-reviewed research/Standard pricing, margin, and invoice formulas/Spreadsheet validation against sample business scenarios
Disclaimer: Calculator results are for general reference and educational purposes only per WHO standards. Health indexes and mathematical models are not a substitute for professional medical diagnosis, clinical nutrition, or certified trade advice.
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