ISO 3779 VIN

Client

ISO 3779 defines the international vehicle identification number structure used in North American 17-character VINs. Paste digits to run the public check-digit rule—no certification authority query.

ISO 3779 scope here

Toolcore implements the transliteration table, position weights, and mod-11 comparison documented for road-vehicle VINs—not homologation or type-approval databases.

Privacy: parsing runs only in your browser. This page does not query DMV, insurance, or manufacturer databases—only the published mod-11 rule for the ninth character.
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After removing spaces and hyphens, the frame must be exactly 17 characters. Letters I, O, and Q are forbidden everywhere. Position 9 (index 8) is the check symbol: decimal 0–9 or X for remainder ten. Each symbol maps to a numeric value, is multiplied by a fixed weight for its position, products are summed, and sum mod 11 must equal the check symbol’s value (X → 10).

Result

Passes check digit — weighted sum mod 11 is 10; expected X.

  • WMI (positions 1–3): 1HG
  • Attributes (4–8): BH41J
  • Check (9): X
  • Model year code (10): M
  • Plant (11): N
  • Sequential (12–17): 109186

Common use cases

  • Link compliance documentation to a working validator.
  • Cross-check spec language against live arithmetic.

Common mistakes to avoid

  • Citing ISO 3779 while implying live registration lookup

    The standard covers format and check digit—not owner records.

FAQ

What is ISO 3779 for VINs?

International standard for VIN content and structure including check digit calculation.

Common search terms

Phrases people search for that match this tool. See the full long-tail keyword index.

  • vin check digit verifier online
  • validate vin number mod 11 free
  • ninth position vin checksum browser
  • iso 3779 vin check digit calculator
  • vehicle identification number check digit locally

More tools

Related utilities you can open in another tab—mostly client-side.