Free NAICS Code Lookup — Find Your Industry Code by Description
Describe what a company does in plain English and get the best-matching NAICS codes with match ratings.
Paste a company description, capabilities statement, or list of services — the tool semantically matches it against all 1,012 six-digit 2022 NAICS codes and shows the top matches with a 0–100 rating, so you don't have to guess keywords or click through drill-down menus.
NAICS codes are required for government registrations (SAM.gov), contract bids, business loans, insurance applications, and tax forms. Classifying by meaning instead of exact words finds the right code even when your wording doesn't match the official title.
Need to classify companies programmatically? The NAICS Code Finder API does this at scale — batch classification, keyword search, code details, and similar-industry discovery.
Need this in your app?
This tool runs on the NAICS Code Finder API — drop it into your product with a few lines of code.
See the API → Get it on RapidAPI ↗Frequently asked questions
What is a NAICS code?
The North American Industry Classification System code — a 2-to-6-digit number that classifies a business by its primary activity. U.S. federal agencies, lenders, and insurers use it to identify what a company does.
How do I find the right NAICS code for my business?
Describe your primary business activity in a sentence or two and use the top-rated match. If several codes rate closely, read their descriptions — the right one is the activity that produces most of your revenue.
Which NAICS version does this use?
The official 2022 NAICS (the current version), including all 2,125 codes and the U.S. Census Bureau's ~20,000-entry index of business activities.
Is this lookup free?
Yes — this tool is free (rate-limited per visitor). For programmatic or bulk classification use the NAICS Code Finder API.