NAICS to SIC converter
Get the 1987 SIC codes behind a 2022 NAICS code, and whether all or only part of each SIC industry is in it.
Try:541511 Custom programming238220 Plumbing & HVAC541330 Engineering561720 Janitorial
27 1987 SIC codes:
- SIC 2311
- SIC 2321
- SIC 2322
- SIC 2323
- SIC 2325
- SIC 2326
- SIC 2329
- SIC 2331
- SIC 2335
- SIC 2337
- SIC 2339
- SIC 2341Women’s, Misses’, Children’s, and Infants’ Underwear and Nightwear(part)
- Boys’ contractors
- Women's, girls', and infants' contractors
- SIC 2342
- SIC 2353
- SIC 2361Girls’, Children’s, and Infants’ Dresses, Blouses, and Shirts(part)
- Boys’ contractors
- Girls’ and infants’ contractors
- SIC 2369Girls’, Children’s, and Infants’ Outerwear, NEC(part)
- Boys’ contractors
- Girls’ and infants' contractors
- SIC 2371
- SIC 2381Dress and Work Gloves, Except Knit and All-Leather(part)
- Men's and boys' contractors
- Women's, girls', and infants' contractors
- SIC 2384
- SIC 2385
- SIC 2386Leather and Sheep-Lined Clothing(part)
- Men's and boys' contractors
- Women's, girls', and infants' contractors
- SIC 2387
- SIC 2389Apparel and Accessories, NEC(part)
- Men's and boys' contractors
- Women's, girls', and infants' contractors
- SIC 2395Pleating, Decorative and Novelty Stitching, and Tucking for the Trade(part)
- Men’s and boy’s apparel contractors
- Women’s, girls’, and infants’ apparel contractors
- SIC 2396Automotive Trimmings, Apparel Findings, and Related Products(part)
- Men's and boys' contractors
- Women's, girls', and infants' contractors
- SIC 2399Fabricated Textile Products, NEC(part)
- Men's and boys' contractors
- Women's, girls', and infants' contractors
- SIC 3151Leather Gloves and Mittens(part)
- Men's and boys' contractors
- Women's, girls', and infants' contractors
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How to use the NAICS to SIC converter
- Enter the NAICS codeA six-digit 2022 NAICS code.
- See the SIC codes behind itWith the part of each SIC industry that maps to the code.
- Use the SIC code the form asks forPick the SIC line that best matches your main activity.
Good to know
Who still asks for SIC codes?
Some banks, insurers, credit bureaus and older state forms. Federal contracting uses NAICS.
Codes without a SIC match
A few NAICS industries are newer than SIC and have no SIC code.
Questions
How do I find the SIC code for my NAICS code?
Read the Census concordance backwards: it lists the 1987 SIC industries (or the parts of them) that make up each NAICS code. Census publishes the 1987 SIC to 2002 NAICS concordance; we carry each 2002 code through the official 2007, 2012, 2017 and 2022 concordances, so a code that later split or merged shows every 2022 code it went to.
What does “part of” an SIC code mean?
The SIC industry was split between several NAICS codes, so only the activity named in the note is in this NAICS code. If a form asks for one SIC code, use the one whose note matches your main activity.
Why does a NAICS code have no SIC code?
Only 3 of the 1,012 NAICS codes have no SIC match in the Census concordance: 112130 Dual-Purpose Cattle Ranching and Farming, 541120 Offices of Notaries and 551114 Corporate, Subsidiary, and Regional Managing Offices (under SIC these were auxiliary establishments, coded by the industry they served).
Do I need an SIC code for government contracts?
No. Federal solicitations, SAM.gov and the SBA size standards use NAICS codes. SIC codes are only asked for on some older or non-federal forms.
Source: U.S. Census Bureau, NAICS concordances (1987 SIC → 2002 NAICS, then 2002 → 2007 → 2012 → 2017 → 2022 NAICS; public domain). PublicBeam is independent and not affiliated with the Census Bureau or any agency. Always check the NAICS code in the official notice before you bid.