About this Generator
This tool generates valid Croatian Personal Identification Numbers that comply with the official format requirements.
The generator creates OIBs following the official structure, including proper check digits calculated using ISO 7064 Mod 11,10 algorithm.
Generated OIBs are for testing purposes only. While they follow the correct format and pass validation checks, they are not officially registered numbers.
About Croatian OIB Generator
Generation Features: • 11-digit format • Random base numbers • Valid check digits • Optional HR prefix
Technical Details: • ISO 7064 implementation • Check digit calculation • Format validation • Prefix handling
To verify an existing OIB, you can use our Croatian OIB Verifier