Convert industry codes

Cross-system equivalents backed by official correspondence tables and exact code matches — never guesses. Approximate mappings are labeled. How it works →

• approximate NAICS 311511 — direct correspondence
• approximate NAICS 311512 — direct correspondence
• approximate NAICS 311513 — direct correspondence
• approximate NAICS 311514 — direct correspondence
• approximate NAICS 311520 — direct correspondence