Free tools for cross-border sellers

Know your numbers before you commit.

Calculate product profit, advertising break-even points, volumetric weight, and carton capacity—without an account or spreadsheet.

Profit

Price products with the costs that actually shape your margin.

Unit profit, margin, ROI, and target price.

Amazon US referral fees plus your manual FBA fulfilment fee.

Turn contribution margin into clear campaign guardrails.

Find the highest ad-cost percentage before profit reaches zero.

Find the minimum return needed to avoid a loss.

Plan chargeable weight and carton space before requesting quotes.

Compare dimensional weight with actual weight.

Compare six orientations, cartons, CBM, and container estimates.

Cross-Border Seller Calculators

Open a calculator and start working immediately.

Inputs stay only on the current page and reset when you reload or return.

Carry suitable inputs into the next calculator without retyping.

FAQ

Are the calculators free?

Yes. The first version is available without registration or payment.

Does the FBA calculator automatically calculate every Amazon fee?

No. It estimates supported Amazon US referral fees, while you enter the FBA fulfilment fee manually and verify all fees in Seller Central.

Are the results financial or tax advice?

No. Results are planning estimates and should be checked against current platform, tax, and carrier rules.