Chile License Plate (Patente) Validator
Online validator for Chile Unique License Plate (PPU). Validates 6-character physical plates and 7-character registration numbers with check digits.
How does Chile Patente validation work?
The Placa Patente Única (PPU) is managed by the Servicio de Registro Civil e Identificación (SRCeI). Our tool validates both physical license plates (6 characters) and official registration formats with check digits (7 characters).
Validation verifies adherence to the 18 authorized consonants and, when the check digit is present, evaluates the weighted Modulo 11 checksum with factors [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.