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NWU

NWU Registrar

SA ID Number Validator

Enter a South African ID number to validate its format, date of birth, and Luhn checksum.

This validator checks:

  • Digits only, exactly 13 digits
  • Valid date of birth (YYMMDD)
  • Gender sequence (0000–4999 female, 5000–9999 male)
  • Citizenship digit (0 = SA citizen, 1 = permanent resident)
  • Luhn algorithm check digit

Format: YYMMDD SSSS C A Z — 6-digit DOB, 4-digit gender sequence, citizenship, unused digit, check digit