Classification Research Tools | Industry, Product, Occupational Codes & Conversions
Discover and compare the world’s leading industry, product, and occupational classification systems - all in one place. This hub provides direct access to every code system SICCODE.com specializes in, including SIC, NAICS, ISIC, NACE, HS, SOC, and more. Use it to explore definitions, code structures, and applications for market research, compliance, and data enrichment. Code Conversions are also available for users who need to translate between systems.
Industry Codes
Industry Codes – Global & U.S.
Core industry taxonomies for market research, segmentation, and compliance mapping.
Legacy U.S. 4-digit system widely used for historical benchmarking and classification.
Current U.S./North America 2- to 6-digit industry structure for economic analysis.
Granular SIC extensions for deeper segmentation beyond standard 4-digit categories.
Finer NAICS granularity for precise targeting and internal analytics.
United Nations global industry taxonomy for international comparability.
EU industry classification aligned with ISIC; useful for EU reporting.
United Kingdom industry codes for domestic filings and analytics.
Australia & New Zealand industry codes for regional analysis.
NAICS in French for Canada’s francophone users and documentation.
NAICS in Spanish for Mexico and Spanish-language references.
Overview of how structured taxonomies organize economic activities.
Product Codes
Commodity and product systems for trade, tariffs, and product-level analytics.
North American Product Classification for services and goods.
Global tariff nomenclature used in customs and international trade.
UN product classification aligned with ISIC industries.
EU tariff schedule building on HS for EU trade statistics.
EU Statistical Classification of Products by Activity.
Specialized Business Codes
Company Identifiers & Standards
Identifiers and taxonomies used in procurement, credit, and capital markets.
U.S. government supplier identifier for federal procurement.
Dun & Bradstreet business identifier used in credit and onboarding.
Global Industry Classification Standard for public equities.
How SICCODE verifies, structures, and maintains datasets.
Overview of workflows, lookups, and research tooling.
Code Conversions & Comparisons
Map legacy SIC industries to modern NAICS equivalents.
Convert NAICS codes to comparable SIC categories.
Translate UN ISIC industries into NAICS for North America.
Map NAICS industries to international ISIC structures.
Key differences, use cases, and mapping guidance.