How to Convert SIC Codes to NAICS Codes
Enter a SIC code or keyword in the search box above to find the corresponding NAICS code or codes.
In some cases, a single SIC code may map to multiple NAICS codes. When this occurs, review the NAICS definitions and included or excluded activities to determine the best fit based on the establishment's primary activity.
SIC to NAICS Crosswalk
The SIC to NAICS crosswalk provides a structured mapping between legacy SIC classifications and the modern NAICS system. Because the two systems differ in structure and scope, mappings are not always one-to-one. The crosswalk is intended to identify candidate NAICS codes that should be verified against official NAICS definitions.
SIC to NAICS Conversion Table
After completing a search using the SIC to NAICS Conversion Tool, the results display SIC codes in the left column and mapped NAICS codes in the right column. Click any SIC or NAICS code in the table to open the detailed code page, where you can review definitions, hierarchy placement, and included or excluded activities.