Break down HS / HTS / TARIC / CN-style codes and prepare manual conversion checks between markets. Extracts the 6-digit international heading and explains why conversion is not always 1:1.
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HS codes share the first 6 digits internationally, but national extensions (US HTS 8/10 digit, EU TARIC 10 digit, UK 10 digit, CN 10 digit) often differ. Conversion between markets is not always 1:1 and should be verified in the destination tariff database.
Steps: strip non-digits from the source code, extract the first 6 digits as the international heading, count national extension digits, note destination-market extension convention, surface why manual verification is required, and link official lookup systems.
Use this tool to review the 6-digit international heading of a code and to plan a manual conversion check between markets.
National extensions vary by market and change over time. Always verify the target code in the destination tariff database before using it on customs documents.
Official source notes and calculator assumptions should be reviewed before shipment, label purchase, invoice filing, or customs entry.
Steps: strip non-digits from the source code, extract the first 6 digits as the international heading, count national extension digits, note destination-market extension convention, surface why manual verification is required, and link official lookup systems.
Source US HTS 6109.10.0012 (10 digits) and target EU TARIC expect a 10-digit code with the same 6-digit heading 610910 but a different national extension. Always verify the target TARIC code before use.
National extensions vary by market and change over time. Always verify the target code in the destination tariff database before using it on customs documents.
This tool provides planning estimates and document preparation support only. Confirm final classifications, duty treatment, and filing requirements with official tariff databases or qualified trade professionals.
Not always. The first 6 digits are typically aligned, but national extensions usually differ.
National extensions after the 6-digit heading add digits for duty rates, statistical reporting, and regulatory measures.
It is the harmonized system heading used internationally. Beyond that, each market maintains its own extension.
No. Verify the destination EU TARIC code before use, even if the first 6 digits look the same.
Use official tariff databases such as USITC HTS, EU TARIC, UK Trade Tariff, or qualified trade professionals.
No. It is a structural breakdown and planning aid only.
Use the AI HS Code Finder, CSV Catalog Checker, and Import Duty Calculator to prepare customs data before shipping.
