Amazon FBA Profit Calculator
Landed cost, Amazon fees and true margin for one product — before you commit to a supplier order.
Your product
The numbers
To reach Small standard, it needs all of:
- 3.25 in off the height — 4 in now, 0.75 in or under to qualify
- 0.3 lb off the weight — 1.3 lb now, 1 lb or under to qualify
Thresholds are Amazon's published tier rules. We do not quote the saving, because our fee table has not been checked against Seller Central.
Drawn to the proportions you entered. Shape is true; the drawing scales to fit, so read the numbers rather than the size.
FBA shipping weight 1.8 lb = greater of actual 1.30 lb and dimensional 1.73 lb (L × W × H ÷ 139), rounded up.
Freight chargeable weight 0.66 kg · volume 0.139 cu ft
FBA fees use published 2026 US schedules (unverified against live Seller Central; price-band and SIPP variations not modeled). Referral 15%, fuel surcharge 3.5%.
What this Amazon FBA profit calculator does
This free Amazon FBA profit calculator takes one product's cost, price and dimensions and returns the numbers that actually decide whether it's worth selling: landed cost per unit, Amazon's fulfilment and referral fees, net profit per sale and your margin. It runs entirely in your browser — nothing is saved and there's no login — so you can rework a product's economics as many times as you need.
What each input means
Unit cost is what you pay your supplier per unit, before freight and duty. Retail price is your Amazon list price — the number buyers see. Dimensions and weight set the FBA fulfilment fee, because Amazon prices fulfilment by size tier and shipping weight; a package that crosses into the next size tier can quietly erase a chunk of margin. The calculator applies the current US fulfilment and referral fee schedules to those inputs, so the fee figures reflect what Amazon actually charges rather than a flat guess.
Amazon US size tiers, and the limits that decide them
A product must meet every limit in a row to qualify for it. Amazon sorts your three sides into longest, median and shortest first, so it is the smallest side that has to clear the smallest number — which is why a product can be well inside the length limit and still fall into a bigger tier on a quarter of an inch of height.
| Size tier | Longest side | Median side | Shortest side | Weight |
|---|---|---|---|---|
| Small standard | 15 in or under | 12 in or under | 0.75 in or under | 16 oz or under |
| Large standard | 18 in or under | 14 in or under | 8 in or under | 20 lb or under |
| Small bulky | 37 in or under | no limit | no limit | 50 lb or under |
| Extra-large | above the limits | — | — | priced by weight band |
Enter your dimensions above and the calculator names your tier and tells you exactly what would have to change to reach the one below it — for example, a 10 × 6 × 1 in product at half a pound is Large standard, and a quarter of an inch off the height would make it Small standard.
These thresholds are Amazon’s published tier rules. Our fee figures are estimates from a published schedule we have not yet checked against Seller Central, so the calculator tells you what to change and deliberately does not quote the saving.
When to use it
Use it before you source — to sanity-check that a product idea can carry Amazon's fees at a price the market will bear — and again before you place a purchase order, once you have real supplier quotes and carton dimensions. Those two moments are where a product's profitability is really decided; catching a thin margin here costs nothing, catching it after a production run is expensive.
Landed cost, and where it goes next
The margin you see is only as honest as the landed cost behind it — unit cost plus freight, duty and per-unit handling, not just the supplier's quote. When you move from checking an idea to running a real order, the cartons-per-pallet calculator sizes the freight that feeds landed cost, and the rest of ManyMuse carries the same numbers through supplier specs, purchase orders and true landed cost — so the margin you decided on here is the margin you actually ship.