Testing data
CPF generator
Generate fictional Brazilian CPF-style numbers for software testing and validate check digits locally in your browser.
Testing only. Generated values are fictional test data. Do not use them for identity, financial, government, or account purposes.
Generate fictional CPF values
Generated values
Generate fictional test values to see them here.
Validate a CPF
Optional AI feature
Explain CPF validation
Ask AI to explain the check-digit process or help design safe test cases. It does not receive generated values.