Free Amazon seller tool

Free FBA Calculator — Amazon Fees & Profit

See exactly what you keep on every sale. This FBA calculator estimates Amazon referral and fulfillment fees from your price, cost and size — then shows net profit, margin, break-even price and ROI, with fee estimates you can adjust to match current Amazon rates.

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FBA Profitability Calculator

Quickly estimate whether a product is worth selling on Amazon — no Seller Central login needed, unlike Amazon's official revenue calculator. Enter your numbers below and get a fee breakdown covering referral, fulfillment, storage and returns, plus net profit, margin, break-even price, and ROI — all from editable estimates you can adjust to current rates.

Fee data: Jan 2026 US rate card · $0.30 minimum referral · 3.5% fuel surcharge · editable estimates — verify in Seller Central

Your product

* Apparel bands are estimates — confirm your band in Seller Central; the % stays editable below.
Fulfillment method
Built-in fee estimates are US-based. For UK/IN, enter your local fees above.

Fee assumptions

These are editable estimates, not live Amazon rates. Adjust them to match the fees you see in Seller Central.

Built-in size estimate: weight 1 lb or less = Small; longest side over 18 in or weight over 20 lb = Oversize; everything else = Standard.

Estimates only — Amazon changes its fees regularly; always verify current rates in Seller Central before making decisions. This calculator uses built-in approximations, not live Amazon data, and ignores costs like shipping to FBA warehouses, storage fees, returns, and advertising.

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How this FBA calculator works

Enter your selling price, landed cost, and product size — it breaks down every Amazon fee line by line: referral, fulfillment, storage, and returns. As an Amazon profit calculator, it then shows net profit, margin, break-even price, and ROI, so you can see which fee eats the most margin before you order inventory.

Worked example

A sample product, run end to end through the FBA fee calculator.

Illustrative example — sample numbers, not live Amazon data

The scenario

Maya sells a silicone kitchen utensil set at $29.99 . Her landed cost is $8.00 per unit and the set weighs 1.2 lb (small standard size).

What she enters

Price $29.99 · cost $8.00 · weight 1.2 lb · category Home & Kitchen (15% referral).

What the calculator shows

Referral fee ≈ $4.50, FBA fulfillment ≈ $4.20, net profit ≈ $13.29 per unit — a 44% margin — with a break-even price around $16.70.

The action

With margin this healthy, Maya can afford a target ACoS up to ~44% and still break even on ads. She moves the numbers into the ACoS / TACoS calculator to set her real ad target.

Watch how it works

Frequently asked questions

Subtract every cost from the selling price: the referral fee (a percentage of the price, varying by category), the FBA fulfillment fee (based on size and weight), your landed product cost, and any extras like inbound placement fees or PPC spend. The calculator above does this line by line so you can see which fee eats the most margin.
Amazon charges FBA sellers in four categories: the referral fee (a percentage of the price, set by category), the fulfillment fee (set by size and weight tier), monthly storage fees, and returns processing — plus occasional surcharges like inbound placement fees. Rates change, so the calculator uses editable estimates — always verify exact fees in Seller Central before ordering inventory.
Most sustainable private-label sellers target a 30–40%+ net margin after all Amazon fees but before ad spend. Below ~20% you have almost no room for PPC; above 40% you can advertise aggressively and still stay profitable.
It depends on the product. FBA wins on Prime conversion and hands-off logistics but charges fulfillment and storage fees. FBM can be cheaper per unit if you have low shipping costs, but you lose the Prime badge. Toggle the fulfillment method in the calculator to compare both side by side with your own numbers.
Work from the sale price downward: subtract the referral fee (your category’s percentage), the fulfillment fee for your item’s size/weight tier, your landed product cost, and a per-unit allowance for storage and returns. The remainder is your profit — divide by price for margin. The calculator above automates this math and shows which fee eats the most.
It is as accurate as the fee inputs you give it. The calculator uses editable estimates — referral, fulfillment, storage and returns — not live Amazon data, because Amazon changes its fee schedule and your exact fees depend on category, size tier and marketplace. Treat the result as a planning estimate, and verify final fees in Seller Central before committing to inventory.
Yes — unlike Amazon's revenue calculator, this free Amazon FBA fee calculator runs in your browser with no login, uses editable fee estimates you can match to current rates, and compares FBA vs FBM side by side. Treat results as planning estimates and verify final fees in Seller Central before ordering inventory.

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Related guides

Deeper reading from the BidPilot blog.

How Much Does Amazon FBA Cost? 2026 Fees Guide

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BidPilot Pro

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