Validador de CNIC

The GuruAlpha CNIC Validator checks whether a Pakistani Computerised National Identity Card (CNIC) number follows the correct format and passes checksum validation. Enter a 13-digit CNIC number and the tool validates the district code, format structure and check digit. Essential for form validation, data entry and identity verification.

The CNIC is the primary identity document for Pakistani citizens, issued by NADRA (National Database and Registration Authority). Every Pakistani citizen aged 18 and above has a CNIC. The 13-digit number encodes information: the first 5 digits identify the issuing district, the next 7 are a unique serial number, and the last digit is a check digit for validation.

The validator checks three levels of CNIC validity. Format validation ensures the number has exactly 13 digits in the correct structure (XXXXX-XXXXXXX-X). District code validation verifies that the first 5 digits correspond to a valid NADRA district code. Check digit validation uses the Luhn algorithm to verify the final digit, catching common data entry errors.

The tool also displays the issuing district information when the district code is valid. This is useful for demographic analysis, logistics planning and understanding regional distribution. The district database is updated regularly with NADRA's official code listings.

For developers building forms that accept CNIC input, the validator provides a JavaScript regex pattern and validation function that can be copied and integrated into form validation logic. The regex pattern ensures that only valid CNIC formats are accepted, reducing invalid data entry.