Amazon Profit Calculator
Best for evaluating product profit. Enter selling price, category, costs, package dimensions and weight. Outputs fees, profit, margin and ROI.
Amazon Seller Tools
Choose the Right Amazon Seller Tool
Amazon FBA Packaging Optimizer
Best for comparing packaging options. Enter current package and mode parameters. Outputs candidate options, size tier, weight, fees, savings and risk.
Length Converter
Convert mm, cm, m, in, ft and yd. Useful for supplier dimensions and Amazon US package size conversion.
Weight Converter
Convert mg, g, kg, oz and lb. Useful for product and package weight conversion.
How the Tools Work Together
- Use the Length Converter to convert supplier dimensions. Length Converter
- Use the Weight Converter to convert product or package weight. Weight Converter
- Use the Profit Calculator to evaluate profit. Profit Calculator
- Use the Packaging Optimizer to compare packaging changes. Packaging Optimizer
- Use Methodology to verify formulas and rule definitions. Methodology
Compare the Available Tools
Amazon Profit Calculator
- Best For
- Margin and ROI checks before listing
- Main Inputs
- Price, category, package dimensions, unit weight, seller costs
- Main Outputs
- Referral fee, FBA fee, net profit, margin, ROI, size tier
Amazon FBA Packaging Optimizer
- Best For
- Screening smaller or alternative cartons
- Main Inputs
- Current package, category, price band, mode settings
- Main Outputs
- Representative options, tier, shipping weight, savings, risk
Length Converter
- Best For
- Metric and imperial dimension conversion
- Main Inputs
- Any supported length unit value
- Main Outputs
- Equivalent values in mm, cm, m, in, ft, yd
Weight Converter
- Best For
- Metric and imperial weight conversion
- Main Inputs
- Any supported weight unit value
- Main Outputs
- Equivalent values in mg, g, kg, oz, lb
Common Questions
Are the xbbTools seller tools free?
The calculators and converters on this site are available without payment to use the current tool set. xbbTools does not guarantee that every tool will remain free in the future.
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.
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.
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.
Why can actual Amazon results differ?
Real payouts and measurements can change because of storage fees, returns, remeasurement by Amazon, promotions, and fee updates. Outputs are estimates for planning—not guaranteed payouts.
Do the tools store my inputs?
Calculator inputs are processed to return results and are not stored as a user profile. See the Privacy Policy for how browser preferences, analytics, and technical logs are handled.
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.