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:: Classification Systems
  • HTS Online Reference Tool
    The HTS Online Reference Tool is a comprehensive website for users of the Harmonized Tariff Schedule of the United States (HTS). The HTS comprises a hierarchical structure for describing all goods in trade for duty, quota, and statistical purposes. This structure is based upon the international Harmonized Commodity Description and Coding System (HS), administered by the World Customs Organization in Brussels ; the 4- and 6-digit HS product categories are subdivided into 8-digit unique U.S. rate lines and 10-digit non-legal statistical reporting categories.
  • Commodity Translation Wizard
    The Commodity Translation Wizard Translates between HTS codes and those for SITC and NAICS classifications.
    The Translation Wizard is useful to translate individual numbers.
    Lookup descriptions for 2 and 4 digit HTS Codes, SIC, SITC, End Use and NAIC codes.
  • Complete HTS-NAICS Concordance Files
    Complete HTS-NAICS concordance files can be purchased from the Census Bureau as part of the monthly trade CDs. (
  • North American Industry Classification System (NAICS)
    To learn more about the North American Industry Classification System (NAICS). The NAICS system is the standard used by Federal statistical agencies in classifying business establishments for the purpose of collecting, analyzing, and publishing statistical data related to the U.S. business economy.

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