HS Code Lookup

This HS code lookup checks the structure of any Harmonized System code you paste, decodes it into chapter, heading, and subheading, and flags codes that are the wrong length or contain stray characters before they reach a customs broker or a tariff calculation.

What it checks

Paste a single code or a column of codes and the tool reports, for each one:

• Length and format. A valid HS code is 6 digits at the international level, with national tariff schedules extending it to 8, 10, or more digits (HTS in the US, the EU Combined Nomenclature, and others). The tool flags codes that are too short, too long, or padded inconsistently.
• Chapter, heading, and subheading split. It breaks 940161 into Chapter 94 (furniture), heading 9401 (seats), and subheading 940161 (upholstered wooden seats) so you can sanity-check the decode against the product.
• Character hygiene. Dots, spaces, and non-numeric characters are common when codes are copied from PDFs or supplier price lists. The tool normalizes formatting and shows what it stripped.
• Suspicious values. Chapter 00, all-zero codes, and codes from chapters that do not exist in the nomenclature are surfaced as likely data-entry errors rather than real classifications.
• Consistency across a list. When you paste a column, it highlights mixed lengths (some 6-digit, some 10-digit) so you can normalize before mapping or import.

How the HS code lookup works

The Harmonized System is a six-digit product nomenclature maintained by the World Customs Organization and used by most trading economies. The first two digits are the chapter, the first four are the heading, and all six form the subheading. National authorities append further digits for their own tariff and statistical needs, which is why a code on a US HTS entry can be ten digits while the same product reduces to six digits internationally.

The tool applies these structural rules directly: it strips formatting, checks the digit count against the 6/8/10 conventions, and walks the hierarchy from chapter down to subheading. The chapter and heading labels come from the standard nomenclature structure, so a furniture SKU resolving to Chapter 94, an MRO fastener to Chapter 73, a CPG beverage to Chapter 22, or an industrial pump to Chapter 84 all decode predictably.

All processing happens in your browser. Nothing is uploaded, there is no file-size limit, and no login is required — paste a code from a supplier feed or an entire column from a spreadsheet and the result is computed locally. That matters when the source data is a confidential price list or a customer’s import history.

Related resources

FAQ

What is an HS code? +

An HS (Harmonized System) code is a standardized numeric product classifier maintained by the World Customs Organization. The first six digits are common worldwide; countries add further digits for their national tariff schedules. It determines duty rates, trade statistics, and import documentation requirements.

How many digits should an HS code have? +

Internationally, an HS code is six digits. National schedules extend it: the US HTS uses ten digits, the EU Combined Nomenclature uses eight, and statistical suffixes can add more. If a column mixes lengths, normalize to a consistent level before mapping or import — this tool flags those mismatches.

Can this tool tell me the correct HS code for my product? +

No. It validates the structure of a code you already have and decodes its chapter, heading, and subheading. Assigning the correct code is a substantive classification decision that depends on the product’s composition and use, and should be confirmed with your customs broker or against the official tariff schedule.

Is my data uploaded anywhere? +

No. The lookup runs entirely in your browser with no upload, no file-size limit, and no login. Pasted codes — even a confidential supplier price list — never leave your machine.

What is the difference between an HS code and an HTS code? +

HS codes are the six-digit international base. HTS (Harmonized Tariff Schedule) codes are the US national extension, typically ten digits, where the first six match the HS code and the remaining digits specify US-specific tariff lines and statistical reporting. Other countries have their own extensions of the same six-digit root.