Free VIN Decoder Script & Library

TypeScript/JavaScript VIN decoder library. Decode, validate, and generate Vehicle Identification Numbers. ISO 3779 compliant. Zero dependencies.

Free VIN Decoder Script

TypeScript Library

Zero Dependencies

ISO 3779 Compliant

Free VIN Decoder Script & Library for Developers

Looking for a VIN decoder script or VIN decoding library? Our free, open-source VIN decoder library provides everything you need to decode, validate, and generate Vehicle Identification Numbers in your TypeScript or JavaScript applications.

What is a VIN Decoder Script?

A VIN decoder script is a code library that extracts information from Vehicle Identification Numbers. Our VIN decoder library can identify the manufacturer, model year, country of origin, and other vehicle details from any valid 17-character VIN.

Why Use Our VIN Decoder Library?

Free VIN decoder script - No cost, no API keys, no rate limits
Zero dependencies - Pure TypeScript, works in any JavaScript environment
ISO 3779 compliant - Follows international VIN standards
640+ WMI codes - Supports 170+ manufacturers worldwide
TypeScript support - Fully typed with IntelliSense
Production ready - Used in production applications

Common Use Cases for VIN Decoder Scripts

Developers use VIN decoder libraries for various applications:

Vehicle registration systems
Automotive inventory management
Insurance quote calculators
Vehicle history reports
Fleet management software
Automotive e-commerce platforms
VIN validation forms

How to Use the VIN Decoder Script

Our VIN decoder TypeScript library is simple to integrate. Download the vin-utils.ts file using the download button above and import the functions you need. No npm install, no package.json changes - just download, copy, and use.

Quick Start - Get Started in 30 Seconds

Download the VIN decoder script and start decoding VINs immediately

Download VIN Decoder Script

Quick Example:

import { decodeVIN } from './vin-utils';

// Decode any VIN
const result = decodeVIN('1HGBH41JXMN109186');
console.log(result.manufacturer); // "Honda"
console.log(result.modelYear);    // 2021
console.log(result.country);      // "United States"

Installation & Setup

Import from vin-utils.ts

import {
  validateVIN,
  decodeVIN,
  generateVIN,
  calculateCheckDigit,
  getManufacturerFromWMI,
  isEUSpec,
  isLikelyISACompliant
} from '@/lib/vin-utils';

TypeScript Types

All functions are fully typed with TypeScript interfaces:

interface VINBreakdown {
  vin: string;
  wmi: string;
  vds: string;
  vis: string;
  checkDigit: string;
  modelYear: number;
  country: string;
  manufacturer?: string;
  plantCode?: string;
  sequentialNumber?: string;
}

interface VINValidationResult {
  valid: boolean;
  error?: string;
}

Code Examples

validate

import { validateVIN } from '@/lib/vin-utils';

// Validate a VIN
const result = validateVIN('1HGBH41JXMN109186');

if (result.valid) {
  console.log('VIN is valid!');
} else {
  console.error('Invalid VIN:', result.error);
}

API Reference

validateVIN(vin: string)

Validates a VIN and returns validation result

Parameters:

vin: string - 17-stellige VIN zum Validieren

Returns:

VINValidationResult mit valid boolean und optionaler Fehlermeldung

Checks:

Länge (muss 17 Zeichen sein)
Gültige Zeichen (kein I, O, Q)
WMI-Erkennung
Jahrscode-Gültigkeit
Prüfziffer-Berechnung

decodeVIN(vin: string)

Decodes a VIN into its component parts

Parameters:

vin: string - 17-stellige VIN zum Dekodieren

Returns:

VINBreakdown-Objekt oder null wenn ungültig

Includes:

WMI, VDS, VIS Aufschlüsselung
Herstellername
Modelljahr
Herkunftsland
Werkcode und Seriennummer

generateVIN(options?)

Generates a valid random VIN

Parameters:

options.country?: string (Standard: 'US')
options.year?: number (Standard: aktuelles Jahr)
options.manufacturer?: string (optional)

Returns:

VINBreakdown-Objekt mit generierter VIN

Features:

Gültige Prüfziffer-Berechnung
Respektiert Herstellerauswahl
Länderspezifische WMI-Codes

calculateCheckDigit(vin: string)

Calculates ISO 3779 check digit

Parameters:

vin: string - VIN mit Platzhalter an Position 9

Returns:

string - Prüfziffer (0-9 oder 'X')

Algorithm:

ISO 3779 Standard
Gewichtete Summe Modulo 11
Gibt 'X' zurück, wenn Rest 10 ist

getManufacturerFromWMI(wmi: string)

Gets manufacturer name from WMI code

Parameters:

wmi: string - 3-stelliger WMI-Code

Returns:

string | undefined - Herstellername oder undefined

isEUSpec(vin: string)

Checks if VIN indicates EU-spec vehicle

Parameters:

vin: string - Zu prüfende VIN

Returns:

boolean - true wenn EU-Spec-Fahrzeug

Also see:

isLikelyISACompliant() für ISA-Compliance-Prüfung

Frequently Asked Questions

Is this VIN decoder script free?

Yes! Our VIN decoder library is completely free and open-source. No API keys, no rate limits, no hidden costs. Download and use it in any project, commercial or personal.

Do I need to install npm packages?

No! Our VIN decoder script has zero dependencies. It's pure TypeScript/JavaScript that works in Node.js, browsers, Deno, Bun, and any JavaScript runtime. Just download the file and import it.

How accurate is the VIN decoder?

Our VIN decoder library implements ISO 3779 and ISO 3780 standards, ensuring accurate decoding of all standard VIN formats. It includes 640+ WMI codes covering 170+ manufacturers across 20+ countries. Manufacturer identification accuracy is high for vehicles from major manufacturers.

Can I use this VIN decoder in production?

Absolutely! This VIN decoder library is production-ready and currently used in live applications. It includes comprehensive error handling, TypeScript types, and follows industry standards. Perfect for vehicle registration systems, inventory management, and automotive applications.

Does the VIN decoder support all manufacturers?

Our VIN decoder library supports 170+ manufacturers including major brands like Toyota, BMW, Mercedes-Benz, Volkswagen, Ford, Tesla, Hyundai, Kia, Honda, Nissan, and many more. The database is regularly updated with new manufacturers and WMI codes.

How do I validate a VIN with this script?

Use the validateVIN() function to check if a VIN is valid. It verifies length, characters, WMI recognition, year code, and calculates the check digit according to ISO 3779 standards.

Standards & Compliance

ISO 3779 & ISO 3780

Our VIN utilities implement the ISO 3779 and ISO 3780 international standards for Vehicle Identification Numbers. This ensures compatibility with global VIN formats and validation rules.

Check Digit Algorithm

The check digit calculation follows the exact ISO 3779 specification, using weighted multiplication and modulo 11 arithmetic. Position 9 is skipped in the calculation as per the standard.

WMI Database

Our WMI (World Manufacturer Identifier) database includes over 640 codes covering 170+ manufacturers across 13+ countries. The database is regularly updated to include new manufacturers and codes.

Additional Resources

VIN Guide Pages

Tools

Open Source & Standards Compliant

Our VIN decoder library is free to use and follows international ISO standards. All code is production-ready and fully tested.

ISO 3779 Compliant

TypeScript Library

Produktionsreif

Zero Dependencies