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Amazon FBA Calculator
Work out your profit, margin and ROI on each unit sold with Fulfillment by Amazon. The referral fee of your category is worked out for you; you type the FBA fee from Amazon's own calculator. Amazon.com rates, in US dollars.
Fill in the fields above: your results show here as you type.
Rates checked on November 3, 2026. Platforms change their fees: check yours before you rely on these figures.
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Frequently asked questions
How is the referral fee worked out?
With your category's rate from Amazon's referral fee schedule for amazon.com, on the total price, or the category's minimum per item (0.30 USD for most) when that's more. Some categories have two or three rates by price: the calculator applies them as Amazon describes.
Why do I type the FBA fee myself?
It depends on your exact product, and Amazon updates it. Amazon's revenue calculator works it out from your product's dimensions and weight: copy it here.
Which costs are left out?
Your selling plan (39.99 USD a month on Professional, or 0.99 USD per item sold on Individual), any other Amazon fee you pay, and costs like advertising. Add what you pay per unit to other costs.
Where do the rates come from, and are they current?
From Amazon's pricing page for amazon.com sellers, checked on November 3, 2026. Amazon updates its fees: check them before you rely on a figure.
What's the difference between margin and ROI?
The margin is your profit as a share of the selling price. The ROI is your profit as a share of what you spent on the product and on getting it to Amazon.
Is it free, and is what I type stored?
It's free, with no signup and no limit. The maths runs in your browser: nothing you type is sent anywhere.
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