Amazon FBA Fee Calculator
Calculate Amazon referral fees, FBA fulfilment fees, profit margin and ROI for any product price point.
Last reviewed by the Radiatus Cloud team
Look up your exact FBA fulfilment fee in Seller Central (it depends on size tier and weight; e.g. small standard ≈ $3.2–$3.6, large standard 1–2 lb ≈ $5.4–$6.9). Referral fee minimum of $0.30 applies. Rates change — verify with Amazon's current schedule.
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Work out Amazon FBA profit
Selling on Amazon FBA means paying referral fees and fulfilment fees, and the two together decide your margin. This calculator computes the referral fee, the FBA fulfilment fee, and your profit margin and ROI for a product, so you know whether it is worth selling.
Why FBA math decides viability
Amazon charges a referral fee, a percentage of the sale, and an FBA fee for storing, picking and shipping the item, which depends on its size and weight. Together with your product cost these determine the margin, and for many products the fees leave a thinner margin than sellers expect. Working out the margin and ROI before sourcing a product is how you avoid stocking something that cannot profit, which is one of the most common and costly FBA mistakes.
Viability before you source
The calculation runs entirely in your browser, so your figures are never uploaded and stay on your own machine, which matters for anything involving money.
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Frequently Asked Questions
What fees does Amazon FBA charge?
A referral fee (a percentage of the sale) and an FBA fulfilment fee for storing, picking and shipping the item, which depends on its size and weight.
Why calculate margin before sourcing?
Because the fees plus your product cost often leave a thinner margin than expected. Checking first avoids stocking a product that cannot profit.
What is ROI here?
Return on investment: your profit relative to what you spent on the product, which shows how efficiently your money is working, not just the margin.
What drives the FBA fee?
The item’s size and weight, since Amazon charges for the physical handling and storage. Larger, heavier items cost more to fulfil.
Is my data uploaded?
No. The calculation runs entirely in your browser.
Privacy & Security
Runs entirely in your browser. No data is sent to any server.
How to Use
Enter your sale price, referral category, FBA fulfilment fee from Seller Central and product cost to see fees, profit, margin and ROI.
Disclaimer: This tool is provided "as is" without warranty of any kind. Results are for educational and utility purposes.
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