Chile License Plate (Patente) Generator
Chile Unique License Plate (PPU / Patente) generator for software testing and QA.
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About Chile License Plate (PPU)
The Placa Patente Única (PPU) is the official vehicular identifier in Chile, managed by the Servicio de Registro Civil e Identificación (SRCeI) following guidelines from the Ministry of Transport (MTT).
The current format (since 2007) consists of 4 consonants (from an authorized set of 18 letters) followed by 2 digits. In official vehicle registration documents (Padrón), a check digit (DV) is calculated using a weighted Modulo 11 algorithm with weights [7, 6, 5, 4, 3, 2].
Anatomy & Structure of Chilean License Plate (PPU)
The Chilean PPU vehicle registration code follows two regulatory standards:
| Position | Field | Length | Meaning & Rule | Example |
|---|---|---|---|---|
| New Standard (2007+) | 4 Consonants + 2 Digits | 6 or 7 characters | Restricted set of 18 official consonants (vowels and M, N, Ñ, Q omitted) + 2 digits + optional check digit | BB-CL·10-4 |
| Historical Standard (1985-2007) | 2 Letters + 4 Digits | 6 or 7 characters | 2 authorized letters + 4 digits + optional check digit | AB-12·34-1 |
Official License Plate Validation Algorithm (SRCeI Modulo 11)
The civil registry verifies license plate check digits via alphanumeric conversion and weights [7, 6, 5, 4, 3, 2]:
S = Σ (val[i] × [7, 6, 5, 4, 3, 2][i]); R = S % 11; DV = R === 0 ? 0 : (11 - R === 10 ? "K" : 11 - R)
- 1. Map letters to regulatory numerical values (B=1, C=2, D=3, F=4, etc.). Digits retain their literal value.
- 2. Multiply the 6 base characters by positional factors [7, 6, 5, 4, 3, 2].
- 3. Calculate remainder modulo 11: R = Sum % 11.
- 4. If R == 0 -> DV = 0; If 11 - R == 10 -> DV = "K"; else DV = 11 - R.
- 5. Conforms if the 6-character physical structure is valid or the 7th character matches DV.