Convert industry codes

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

• exact NAICS 221122 — direct correspondence
• approximate NAICS 221111 — mapped via ISIC 3540
• approximate NAICS 221112 — mapped via ISIC 3513
• approximate NAICS 221113 — mapped via ISIC 3511
• approximate NAICS 221114 — mapped via ISIC 3512
• approximate NAICS 221115 — mapped via ISIC 3513
• approximate NAICS 221116 — mapped via ISIC 3540
• approximate NAICS 221117 — mapped via ISIC 3513
• approximate NAICS 221118 — mapped via ISIC 3512
• approximate NAICS 221121 — mapped via ISIC 3511
• approximate NAICS 221210 — mapped via ISIC 3540