AMZ Prep FBA Calculator: Amazon Profit & Fees 作者： AMZ Prep

FBA Calculator by AMZ Prep helps Amazon sellers see what a product will actually earn after Amazon fees. Open the calculator on an Amazon product page, add your costs, and get net profit, profit margin, and ROI in seconds.

It is free to use, requires no account or sign-up, and runs its calculations locally in Firefox.

What it calculates

• FBA fulfillment fees based on the product's size tier
• Amazon referral fees by product category
• Monthly inventory storage fees
• Net profit after Amazon fees and your own costs
• Profit margin and return on investment (ROI)
• Break-even selling price

Built for sourcing decisions

• Reads product dimensions and weight from the Amazon product page to determine the size tier
• Lets you add your own costs, such as product cost, prep fees, and inbound shipping
• Exports results to CSV for spreadsheet analysis

Supported Amazon marketplaces

• United States (amazon.com)
• Canada (amazon.ca)
• United Kingdom (amazon.co.uk)
• Germany (amazon.de)
• France (amazon.fr)
• Italy (amazon.it)
• Spain (amazon.es)
• Japan (amazon.co.jp)
• Australia (amazon.com.au)

Who it is for

• New sellers checking whether a first product is profitable
• Wholesale and online arbitrage sellers vetting deals quickly
• Private label brands planning pricing and margins
• Established FBA businesses running quick profitability checks while sourcing

How to use it

1. Open a product page on a supported Amazon marketplace
2. Click the FBA Calculator icon in the Firefox toolbar
3. Enter your product and shipping costs
4. Review net profit, margin, and ROI, and export to CSV if needed

Privacy

All calculations happen in your browser. The add-on does not collect, store on external servers, or transmit your searches, product data, or personal information.

Fee estimates are based on Amazon's published fee schedules. Always confirm final fees in Seller Central before making purchasing decisions.

About AMZ Prep

AMZ Prep is an Amazon FBA prep and 3PL fulfillment company. This add-on is not affiliated with, endorsed by, or sponsored by Amazon.
5. Screenshot Captions / Key Features
-Complete FBA fee breakdown: fulfillment, referral, and storage
-Net profit, profit margin, ROI, and break-even price
-Product dimensions and weight read from the listing
-Custom cost inputs for product, prep, and shipping
-CSV export
-Support for 9 Amazon marketplaces
-Free to use with no account required
-Local processing in your browser