Test data generatorsTest Data Generators & Validators
Generate and validate Brazilian CPF and CNPJ check digits, look up postal codes through ViaCEP and create fictitious individual and company test profiles.
Brazilian IDs, postal codes and fictitious test profiles.
1 record(s) available to download. Limit: 1000 per batch.
Access is verified automatically when generating.
Generate CPF test identifiers
Modulo 11 check digit calculation
Validate CPF check digits
Check digit validation
The ninth digit is associated with a tax registration region. The last two digits are calculated using weighted Modulo 11 checks. This does not verify registration status.
How to use this tool
Choose CPF, CNPJ, CEP, individual or company records. Configure the format, batch size and available filters before generating and downloading test data.
Worked example
Export the same records as JSON for an API and XLSX for manual review. CSV and TXT support import into command-line and data processing tools.
Interpreting the result
Generated identifiers are intended for testing. Mathematical validation does not replace an official registration query.