CNPJ Generator

CNPJ Generator for Software Testing

Free online tool to generate valid CNPJ numbers for developers and QA testers. Create single or bulk CNPJs for system testing and demonstrations. Generate fictitious CNPJ numbers for testing without exposing real business data. Numbers follow the official format (99.999.999/9999-99) with valid check digits. Choose between formatted or numbers-only output. Generate up to 100 unique CNPJs at once for batch testing and database seeding.

What is CNPJ?

CNPJ (Cadastro Nacional da Pessoa Jurídica) is Brazil's business registration number, issued by the Federal Revenue Service. This 14-digit number is required for companies to issue invoices, hire employees, open business bank accounts, and conduct official commercial activities. The CNPJ functions as a business identity, essential for legal operation in Brazil.

How to Use

Select your preferred format: official (with dots, slash and dash) or numbers only. Click 'Generate CNPJ' to create a valid number. For bulk generation, enable 'Generate Multiple CNPJs' and choose quantity (2-100). Copy individual CNPJs or all at once with a single click.

Important Notice

Generated CNPJs are fictitious and have no legal validity. Use exclusively for educational purposes, software testing, and development environments. Using fake CNPJs for official registrations is fraud and may result in legal consequences. Users are responsible for proper use of this tool.

Use the CNPJ Generator responsibly to streamline your testing workflows.

Frequently Asked Questions

Are generated CNPJs real?

No. Generated CNPJs are fictitious numbers that only pass mathematical validation. They are not registered with Brazil's Federal Revenue and should only be used for testing purposes.

Can I use generated CNPJs to register a business?

No. Using fake CNPJs for official registrations is considered fraud in Brazil and may result in legal consequences. Use only for software testing in development environments.

How does CNPJ validation work?

CNPJ has 2 check digits calculated from the first 12 digits using a specific algorithm. Our generator creates numbers that pass this mathematical validation, making them suitable for system testing.

Can I generate multiple CNPJs at once?

Yes! Generate up to 100 unique CNPJs at once. Perfect for batch testing, QA automation, and populating test databases.

Is this generator free?

Yes, completely free with no limits. Generate as many CNPJs as needed for your tests without registration or payment.

[ Wikipedia: CNPJ (Cadastro Nacional da Pessoa Jurídica), CNPJ (National Registry of Legal Entities) ]