This tool works with Brazilian documents and rates (CPF, CNPJ, Selic, IPCA).
Generators
Document Generator
- cpf
- cnpj
- brasil
- cnpj alfanumérico
Generate and validate Brazilian CPF and CNPJ online — including the new alphanumeric CNPJ format (2026). Free for testing and prototypes.
Generates and validates CPF and CNPJ with correct check digits, including the alphanumeric CNPJ format planned by Brazil's tax authority from July 2026 (letters and digits in the first 12 positions). The validator accepts numeric and alphanumeric formats; the generator produces both, with an option to use numbers only for the legacy model. For staging and testing only — never with real company data.
Documentation