AMZ workflow notes
How sellers can use this calculator
Use the calculator as a first-pass decision tool before ordering inventory or launching ads. Enter selling price, product cost, FBA fee, referral fee, CPC, conversion rate, and exchange rate to see whether the product can survive advertising and still keep a reasonable margin.
The output is an estimate, not accounting advice. Real results can change with storage fees, returns, coupons, placement fees, currency movement, and category-specific referral rates. Treat the numbers as a fast model for comparing options and spotting weak products early.
Exact formulas used by this page
Unit profit = selling price - product cost in USD - freight in USD - FBA fee - referral fee. Product cost in USD and freight in USD are each the RMB input divided by the exchange rate. Referral fee = selling price × referral fee rate. Unit margin is unit profit divided by selling price, while pure ROI is unit profit divided by product cost plus freight.
Daily clicks = daily ad budget ÷ CPC. Daily orders = daily clicks × conversion rate. Expected ACOS is daily ad budget divided by expected daily sales revenue. Daily profit after ads is unit profit multiplied by expected daily orders, minus the daily ad budget; the monthly estimate uses 30 days.
Worked example using the default decimal inputs
With a $15.99 selling price, ¥40 product cost, ¥5 first-leg freight, a $5 FBA fee, a 15% referral rate, a 7.18 exchange rate, a $30 daily budget, $0.30 CPC, and 2.4% conversion, the calculator returns $2.32 unit profit, 14.53% unit margin, 100 daily clicks, 2.4 expected daily orders, and 78.17% expected ACOS. The same model gives a $13.26 break-even selling price before ads.
This worked example uses a US marketplace-style USD selling price and dollar fee inputs while sourcing and freight are entered in RMB. The page does not fetch current US marketplace fees or category rules. Verify the referral rate and FBA fee in Seller Central, and add storage, inbound placement, returns, coupons, taxes, and other costs that apply to your product.
Read the detailed Amazon FBA profit calculator guide for the formulas, assumptions, and a worked example before using the estimate for a sourcing decision.