North American Industrial Classification System (NAICS Codes) and Standard Industrial Classification Codes (SIC Codes) are numerical codes designed by the U.S. Government in order to create uniform descriptions of small business types and size standards.
Lookup 2007 NAICS Codes
Lookup SIC Codes
Small Business Size Standards
Convert Sic to NAICS: Go to "Lookup 2002 NAICS Codes" and in the "enter a keyword search" area enter "SIC #". Example: SIC 7371 click enter. There is no direct conversion available to/from the 2007 NAICS Codes.
Product Service Codes (PSC) and Federal Supply Codes (FSC) are numerical codes designed by the government to create descriptions for products and services. They are not specific to small businesses and do not describe business size. A-Z are for services and 10-99 are for products.