Units of Measure Conversion
Table 1 has the conversions for United States weights and measures to the approximate metric equivalent. Table 2 shows the conversions from metric to approximate United States equivalent.

NAICS/Schedule B Codes Cross-Index
This is a cross-index of Harmonized System subheading numbers and descriptions listed with the corresponding NAICS (North American Industry Classification System) codes. The Harmonized System is used for Schedule B and for the Harmonized Tariff.
NAICS/Schedule B Codes Cross-Index -- NAICS 111110 Through 316999
NAICS/Schedule B Codes Cross-Index -- NAICS 321113 Through 332913
NAICS/Schedule B Codes Cross-Index -- NAICS 332919 Through 990000

ISO Country Codes
These are the 2-character International Standards Organization codes for countries.

International Telephone Calling Codes
These country codes are used when dialing from the US.

Schedule C
Schedule C, Classification of Country and Territory Designations for US Foreign Trade Statistics, is a system of codes that identifies countries or geographic regions of the world.
Schedule C, Alphabetical Index

Schedule D
Schedule D, Classification of US Customs Districts and Ports for US Foreign Trade Statistics, is a system of codes that identifies US Customs Districts and the ports included under each district.
Schedule D, Alphabetical Index

Schedule K
Schedule K, Classification of Foreign Ports by Geographic Trade Area and Country, lists the major ports of the world that directly handle waterborne shipments in the foreign trade of the US.
Schedule K, Alphabetical Index

Corresponding Ports of Entry
These tables cross-index US/Canadian and US/Mexican corresponding ports of entry.

Glossary of International Trade Terms
The glossary contains hundreds of definitions for words and acronyms used in international trade.

Trade Forms
This section displays examples of some of the trade documents needed to process import and export shipments.

World Treaty Organizations & Alliances/International Organization Acronyms
This directory identifies the countries that are signatories to each global treaty organization and alliance, and it lists the international organization acronyms that are used in the Profile section of each Country Profile.

World Maps
Maps of major geographic regions including every country within a region.

Africa
Central America/ Caribbean
Europe
FarEast/ Pacific
NearEast
North America
South America