The North American Industry Classification System (NAICS) is replacing the U.S. Standard Industrial Classification (SIC) system.
NAICS was developed jointly by the U.S., Canada, and Mexico to provide new comparability in statistics about business activity across North America. The North American Industry Classification System includes definitions for each industry, tables showing correspondence between 1997 NAICS and 1987 SICs, and a comprehensive index.

[SIC Conversion Table] [CPC Code] [SITC Code]

NAICS Alphabetical Listing A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

Input digit numerical codes to get SIC code: NAICS Code Conversion Table