How to Use the RG Generator: Complete Guide

The 4Generate RG Generator is a powerful tool for developers, testers, and professionals who need valid RG numbers for testing and system development.

What is an RG?

The Registro Geral (RG) is an identification document issued by Brazilian states to citizens. It consists of 9 characters (8 digits + 1 verification digit), with the last digit being a verifier that guarantees the number's validity. Each Brazilian state has its own RG pattern, with the São Paulo format (XX.XXX.XXX-X) being the most known and used as reference.

When to use the RG Generator?

Our tool is ideal for:

• Software development: Test forms and validations that require RG
• Integration testing: Validate systems that process identification documents
• Prototyping: Create example data for interfaces and demonstrations
• Education: Learn about RG structure and validation
• API testing: Validate endpoints that process personal information

How to use the tool

Step 1: Access the Generator

Navigate to the RG Generator page on our site.

Step 2: Configure options

The tool offers various customization options:

• With formatting: Choose between RG with or without formatting (dots and dash)
• Auto copy: Enable to automatically copy the generated RG

Step 3: Generate the RG

Click the "Generate Random RG" button and the number will be generated instantly following the São Paulo standard.

Step 4: Copy the result

Use the copy button to transfer the generated RG to where you need it.

Practical example

Let's generate an example RG:

Generated RG: 12.345.678-X

This RG is valid only for testing and development purposes. Never use generated RGs for fraudulent or illegal purposes.

RG Validation

All RGs generated by our tool pass the official São Paulo algorithm validation, ensuring that:

• The verification digits are correct
• The format complies with the SP standard (XX.XXX.XXX-X)
• The number is mathematically valid
• Follows the official validation algorithm

São Paulo standard format

Our tool uses the São Paulo standard, which is the most known and used as reference:

• Format: XX.XXX.XXX-X
• Total characters: 9 (8 digits + 1 verifier)
• Verification digit: Can be a number (0-9) or the letter X (when the division remainder is 10)

Differences between CPF, CNPJ and RG

Although all are Brazilian identification documents, there are important differences:

• CPF: 11 digits, used for individuals (Federal Revenue)
• CNPJ: 14 digits, used for legal entities/companies (Federal Revenue)
• RG: 9 characters, used for individuals (state-issued, pattern varies by state)

Best practices

1. Use only for testing: Generated RGs are only for development and testing
2. Don't share real data: Never use real people's RGs in test environments
3. Respect privacy: Maintain the security of personal data
4. Always validate: Use our validator to verify RGs when needed
5. Understand limitations: Generated RGs follow the SP standard; other states may have different formats

Important limitations

⚠️ Important: Generated RGs follow the São Paulo pattern (XX.XXX.XXX-X). Each Brazilian state has its own RG pattern, so RGs generated by this tool are valid only for simulating the São Paulo format.

Conclusion

The 4Generate RG Generator is an essential tool for developers working with Brazilian systems that require validation of identification documents. Use responsibly and always respect data privacy and security.

For more information, visit our support page or explore other useful tools on our site.