WMI VIN decoder

Client

WMI VIN decoder searches often want the three-character World Manufacturer Identifier at the start of the frame. This page shows WMI plus checksum validation—full brand decode still needs NHTSA or OEM tables separately.

WMI readout limits

Toolcore displays the WMI substring and validates the full frame checksum. Detailed manufacturer names and plant lists are maintained by NHTSA and OEMs—not computed here.

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

  • Roughly localize manufacturer before opening external decode portals.
  • Audit WMI consistency across a CSV of fleet units.

Common mistakes to avoid

  • Treating WMI alone as proof of country of assembly

    WMI indicates manufacturer registration—not always final assembly plant.

FAQ

What is WMI in a VIN?

The first three characters identifying the manufacturer under ISO 3779.

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.