Know your real profit before you order a single unit.
Revenue is vanity. The calculator subtracts every cost — product, shipping, Amazon fees, ads and storage — and shows net profit, margin, ROI and break-even price per unit.
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Profit Calculator — try it
Sample dataNet profit
$5.99
Margin
23.1%
Break-even
$20.00
Illustrative example with a simplified 15% referral fee and an estimated fulfillment fee. The full calculator uses the fee schedule for your category and size tier, and labels every estimate.
True Net Profit
Revenue minus every cost — product, shipping, Amazon fees, ads and storage.
Margin & ROI
Net margin and return on investment per unit, per product, per scenario.
Break-Even Price
The minimum price that covers all costs — know it before you negotiate.
What-If Scenarios
Change price, cost or ad spend and see profit move instantly.
Every cost that stands between revenue and profit
Most 'profitable' product ideas die on a cost the seller forgot to count. The calculator makes every line explicit.
Product Cost
Unit cost from your supplier, including packaging and prep — the foundation every other number builds on.
Inbound Shipping
Freight from supplier to Amazon, per unit. The cost new sellers most often forget.
Amazon Referral Fee
The category percentage Amazon takes from every sale — typically 8–15% depending on category.
FBA Fulfillment Fee
Picking, packing and shipping per unit, based on size and weight. Estimated from the fee schedule and labelled as such.
Advertising Spend
Your PPC cost per unit sold. The difference between a profitable product and an expensive hobby.
Storage & Other Costs
Monthly storage, returns allowance and any other per-unit costs you want to include.
From numbers to decision in four steps
Enter your numbers
Selling price, product cost, shipping and your expected ad spend per unit.
Fees are applied
Referral and FBA fulfillment fees are calculated from the current fee schedule for the category and size tier.
See the full picture
Net profit per unit, margin, ROI and break-even price — all in one view.
Run scenarios
Adjust any input and watch profit move. Find the price and cost structure that actually works before you order stock.
When the calculator earns its keep
Before You Order
Validate that a product idea survives real-world costs before a single dollar goes to a supplier.
Supplier Negotiation
Know exactly how much each $0.10 off unit cost adds to your margin — negotiate with numbers, not hope.
Pricing Decisions
See what a price change does to profit after fees, not just to revenue.
PPC Budgeting
Find the ad spend per unit your margin can actually absorb, and set your target ACoS from it.
How we handle fees — and where the limits are
Profit math is only useful if the fee numbers are honest. Here's exactly how the calculator treats them.
- FBA fees estimated from the published fee schedule — and labelled as estimates
- Every cost line visible — nothing hidden inside a single 'fees' number
- Break-even price and ROI shown alongside profit
- Sample calculator on this page is clearly labelled
- Treating a fee we can't determine as zero — unavailable is shown as unavailable
- Guaranteeing a product will be profitable — the math is only as good as your inputs
- Including every possible Amazon charge — unexpected fees (long-term storage, removals) aren't in the base calculation
Profit Calculator questions, answered
Run the numbers before the numbers run you.
Calculate your real profit per unit in minutes — and walk into every supplier negotiation knowing your break-even.
14-day free trial • No credit card required • Cancel anytime