Freight and customs tools

Lookups and calculators built on official sources, with the source and its date on every page.

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Last updated By the Linbis team

Free lookups and calculators for people who move freight into and out of the United States. Each one is built on an official source, names it, and gives its date, so you can check the answer before it goes on a filing.

Customs lookups

CalculatorISF deadline calculatorBoth ISF cut-offs from the sailing and the arrival, for an ISF-10 or an ISF-5, with the time left.LookupHTS code lookupThe US tariff schedule, 2026 HTS Revision 21: search by number or by product words and read the General, Special and Column 2 duty rates of any line.LookupPort code lookup427 US port codes (Schedule D) and 3,524 foreign port names with their codes (Schedule K), searchable by name, country or number.ReferenceCBP FIRMS code lookupWhat a FIRMS code is, where it appears on a filing, and a reference table from CBP’s own report.

Duty and cargo calculators

CalculatorUS import duty and customs fee calculatorDuty at your HTS rate, plus the Merchandise Processing Fee and Harbor Maintenance Fee with the limits that apply from 1 October 2026.CalculatorCBM calculatorCubic metres from the dimensions of your cartons or pallets.

When a lookup is not enough

A lookup answers one question once. Linbis keeps the same reference data on the shipment, so the port, the facility, the fees and the ISF deadline are checked on every file and reach the invoice. Linbis is a CBP-approved software provider: you file the ISF and the AMS manifest from the shipment, under your own SCAC.

Linbis planPublished priceUsers included
Startup$150 per month1
Premium$299 per month3
EnterpriseCustomBy quote

The trial is free and does not ask for a card. Figures from linbis.com/pricing on 6 October 2026.

What these tools are not. They are copies of official lists and rules on the dates stated, not the system of record, and an estimate is not a ruling. Check the source, or ask your broker, before you file.