Convert industry codes
Cross-system equivalents backed by official correspondence tables and exact code matches — never guesses. Approximate mappings are labeled. How it works →
No verified match yet for NAICS 23821
We only show conversions backed by official tables or exact matches — a verified NAICS → ISIC mapping for 23821 Electrical Contractors and Other Wiring Installation Contractors isn't available. Broader matches may exist at a higher level: