Open-source calculators and estimators for importers, dropshippers, and e-commerce sellers. US customs duty, shipping costs, HS codes, profit margins, and more — all with 2026 data.
Start Sourcing Smarter →US customs duty with Section 301 surcharges, MPF/HMF, and landed cost breakdown.
Sea LCL, Air, and Express freight rates with volumetric weight logic and port surcharges.
Gross/net margin, markup, break-even with Amazon FBA vs. Shopify vs. B2B benchmarks.
Total landed cost with 8+ hidden costs uncovered — FOB to doorstep breakdown.
Find correct 6-digit HS and 10-digit HTS codes for 15+ product categories.
Compare EXW, FOB, CIF, DDP — understand risk transfer and cost responsibility.
Cubic volume and volumetric weight for sea, air, courier — container planning ready.
Break-even quantities with 2026 category benchmarks — apparel, electronics, yoga mats.
UKGT duties + 20% VAT with post-Brexit 2026 rules — £135 de minimis threshold.
Sea, Air, and Rail freight from Shenzhen/Ningbo/Shanghai to Felixstowe/Southampton.