AMAZON · FBA PROFIT CALCULATOR
Price minus factory cost isn't your profit
An FBA profit calculator: enter factory cost, freight rate and box size. See what each unit keeps, even before you list.
- Calculate here without an account
Before fees · $39.99 price − $4.23 sourcing$35.76
- Referral−$6.00
- FBA fee−$4.55
- First leg−$1.35
- Storage−$0.10
- Ads−$8.00
- Returns−$1.00
After costs · estimateUS · sea · off-peak$14.76estimated margin 36.9%
The six costs you forgot
After the $4.23 sourcing cost:
- Referral · $6.00
Amazon's cut per sale.
- FBA fee · $4.55
Pick, pack and ship.
- First leg · $1.35
On chargeable weight.
- Storage · $0.10
Off-peak, by stock level.
- Ads · $8.00
20% of price, assumed.
- Returns · $1.00
2.5% returned, assumed.
Price your own product
Why this calculator
| Typical FBA calculator | Keble | |
|---|---|---|
| Works before you list | LimitedUsually a live listing | YesFactory price, box size |
| First leg from your forwarder | LimitedUsually one total | YesYour per-kg rate |
| Scenario lines | LimitedUsually one | YesMode, season, EU VAT |
Typical of each category, from their public pages, as of Oct 2026; individual tools vary.
One product, three routes
Sample data
Germany is another marketplace: fees, VAT and currency all change. 1 USD = 7.10 CNY = 0.92 EUR; off-peak.
| Route | Price | First leg | VAT | Profit | Margin |
|---|---|---|---|---|---|
| US · sea | $39.99 | $1.35 | — | $14.76 | 36.9% |
| US · air | $39.99 | $3.60 | — | $12.51 | 31.3% |
| Germany · sea, incl. VAT | €39.99 | €1.24 | €7.60 | €9.58 | 24.0% |
Questions
Do I need a store or an ASIN?
Neither; only your numbers.
How accurate is it?
An estimate from your inputs and fee tables, not a payout.
What does it cost?
On this page: free and uncounted. Each Keble AI Agent calculation counts 1 request and needs a plan or balance. From MCP or the API: 1 request, never charged money.
Which marketplaces?
11 Amazon marketplaces: North America, Japan and Europe (EU incl. VAT).
Know each unit's profit before you order
- Calculate here without an account
- Keble accounts are invite-only for now
Use it from your own AI Agent
Use the Keble MCP tool amz_profit_calculate to price one Amazon product. costProfile: marketplace US, price 39.99 USD, len1 20 / len2 12 / len3 5 cm, weight 0.45 kg, feeCategoryString HOME_AND_KITCHEN, expectedPurchasingCost 30 CNY, expectedAdsCostRatio 0.2, expectedCustomerReturnedRatio 0.025, expectedAverageDailyInventoryVolume 30, expectedAverageDailyShippedVolume 3, isApparel false, isDangerousGoods false, isBattery false, exchangeRates USD 1.00 and CNY 7.10 per USD. shippingProfile: freightPerKg 3 USD, airPerKg 8 USD, same exchangeRates. shippingMode FREIGHT, isPeakPeriod false. If the tool returns INVALID_REQUEST, fix the named field and retry. Then show me the profit, the margin and the largest cost line.