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
Generate Brazilian CPF test identifiers or check CPF check digits. Choose a batch size and export records as JSON, CSV, XLSX or TXT.
Worked example
Use small batches to test input formatting and larger batches of up to 1,000 records to test imports and form validation.
Interpreting the result
Mathematical validity does not confirm issuance, existence, ownership or tax registration status. Use generated identifiers only in authorized test environments.