Canada SIN Validator
Online Canada Social Insurance Number validator. Ideal for your tests.
How does Canadian SIN validation work?
Validation checks if the document has exactly 9 digits, starts with a valid province digit (1 to 7 or 9), and applies the Luhn (Modulo 10) formula.
If the accumulated weighted sum of alternate doubled digits is divisible by 10, the SIN is mathematically valid.