Amazon Profit Calculator
Estimate Referral Fee, FBA Fee, Product Cost, Net Profit, Margin, and ROI from seller-style inputs.
Simple · Practical · Independent
Free Amazon Seller Tools for Smarter Product Decisions
Estimate profit, compare FBA packaging options, and convert product dimensions and weight with practical tools built for Amazon sellers.
Free Tools for Amazon Sellers
Amazon FBA Packaging Optimizer
Compare package dimensions, size tier, dimensional weight, shipping weight, and estimated fee savings.
Length Converter
Convert mm, cm, m, in, ft, and yd for packaging dimensions and supplier drawings.
Weight Converter
Convert mg, g, kg, oz, and lb for product and package weight before entering other tools.
Why Sellers Use xbbTools
Practical inputs
Work with the fields sellers already use—Selling Price, Category, Package Dimensions, Unit Weight, Product Cost, and Inbound Cost—without turning the homepage into a spreadsheet.
Clear outputs
Review estimated fees, profit, margin, ROI, size tier, shipping weight, and packaging scenarios in one place before you commit to a listing or carton design.
No account required
Open a tool and start comparing. xbbTools does not require sign-up to use the calculators and converters available today.
Independent and transparent
xbbTools is not affiliated with Amazon. Methodology, Disclaimer, and rule status references explain how estimates are built so you can validate against official sources.
A Simple Workflow for Product Decisions
Convert supplier dimensions and weight with the Length Converter and Weight Converter.
Estimate Amazon profit, referral fees, and FBA fees with the Profit Calculator.
Compare packaging scenarios, size tier effects, and modeled fulfillment fees with the Packaging Optimizer.
Review calculation methodology and validate results against official Amazon data before production decisions.
Transparent Rules and Independent Estimates
xbbTools is an independent tool collection focused on Amazon US seller planning. It is not operated by, endorsed by, or affiliated with Amazon.
Estimates rely on versioned rule packages and documented calculation steps. Rule status appears in the site footer on tool pages, and Calculation Methodology explains how size tiers, shipping weight, and fees are defined.
Outputs are meant for planning and comparison—not as guaranteed bills, official Amazon classifications, or complete fee coverage. Important decisions should be checked against Seller Central, inbound measurement, and current Amazon documentation.
Read the Disclaimer for estimate limitations and the Privacy Policy for how inputs and browser preferences are handled.
Frequently Asked Questions
What is xbbTools?
xbbTools is a free collection of Amazon seller tools for profit estimates, FBA packaging comparison, and length and weight conversion. It helps you evaluate product ideas before you rely on a single spreadsheet or supplier quote.
Are the tools free to use?
Yes. The calculators and converters on this site are available without payment to use the current tool set described on the homepage.
Do I need an account?
No account is required to use the tools available today. Open a calculator or converter and enter your own product data directly in the browser.
Is xbbTools affiliated with Amazon?
No. xbbTools is independent and not affiliated with Amazon. Always confirm fees, measurements, and classifications in Seller Central and official Amazon resources.
Are the fee and profit results guaranteed?
No. Results are estimates for planning. Actual referral fees, FBA fees, measurements, and account settings can differ from modeled output.
Which tool should I use first?
Start with unit conversion if supplier data uses metric units, then move to Profit Calculator for margin checks or Packaging Optimizer when carton size drives fulfillment cost.
Can I compare packaging changes?
Yes. Use the Packaging Optimizer to model different outer dimensions and weights. Pair it with the Length and Weight Converters when suppliers quote in mixed units.
Where can I review the calculation methodology?
Open Calculation Methodology for definitions of unit weight, shipping weight, dimensional weight, rounding, and the rule package used across xbbTools estimates.