VIN registration format check

Client

Registration forms reject transposed digits late in the process. VIN registration format check runs mod-11 locally before you retype into a state portal—not a substitute for eligibility or emissions clearance.

Before the registration portal

Copy from title or door jamb, paste here, confirm mod-11 pass, then enter the same string into your state system—reduces rework from single-character OCR errors.

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.
?

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

  • Catch typos before mailing registration packets internally.
  • Validate VIN on temporary tag applications in fleet ops.
  • Support teams verifying customer copy-paste before portal submission.

Common mistakes to avoid

  • Assuming format pass means registration will approve

    DMV still validates ownership, insurance, and emissions separately.

  • Using pre-1981 short VINs on modern registration forms

    Most current road vehicles require 17 characters—length mismatch is expected for classics.

FAQ

Does this submit to DMV?

No—local format and check-digit math only.

Why check before registration?

Fixing one wrong ninth digit is faster before notarized paperwork ships.

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.