🇧🇷 CPF Generator

Generate valid Brazilian CPF numbers for testing and development. Our Brazil CPF generator creates mathematically valid CPF numbers that pass validation checks.

🛡️ Valid Algorithm • Testing Only

Format

State (Optional)

Count

Generated CPF Numbers

⚠️ These CPF numbers are for testing and development purposes only. Do not use for illegal activities or fraud.

Brazil CPF Generator - Generate Valid Brazilian CPF Numbers

Our Brazil CPF generator creates mathematically valid CPF numbers for software testing, form validation, and development purposes. Every CPF generator valid number follows the official Brazilian algorithm.

What is a Brazilian CPF Number?

CPF (Cadastro de Pessoas Físicas) is the Brazilian individual taxpayer registry identification. It's an 11-digit number in the format XXX.XXX.XXX-XX where:

First 8 digits - Random base number
9th digit - State/region identifier (fiscal region)
Last 2 digits - Verification digits (check digits)

CPF Generator Valid - How It Works

Our CPF generator valid algorithm follows the official Brazilian mathematical formula:

Generate 9 random base digits (with optional state digit)
Calculate first verification digit using modulo 11
Calculate second verification digit using modulo 11
Combine to create a valid 11-digit CPF

Brazilian CPF Generator by State

The 9th digit of a Brazilian CPF generator indicates the fiscal region where the CPF was registered:

0 - Rio Grande do Sul
1 - Distrito Federal, Goiás, Mato Grosso, Mato Grosso do Sul, Tocantins
2 - Amazonas, Pará, Roraima, Amapá, Acre, Rondônia
3 - Ceará, Maranhão, Piauí
4 - Paraíba, Pernambuco, Alagoas, Rio Grande do Norte
5 - Bahia, Sergipe
6 - Minas Gerais
7 - Rio de Janeiro, Espírito Santo
8 - São Paulo
9 - Paraná, Santa Catarina

Fake CPF Generator Brasil - Use Cases

Our fake CPF generator Brasil is perfect for:

Software Testing - Test form validation and input fields
Development - Populate test databases with valid data
QA Testing - Verify CPF validation algorithms
Educational - Learn how CPF numbers work
Demo Environments - Create realistic test scenarios

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CPF vs CNPJ

While CPF is for individuals, CNPJ (Cadastro Nacional da Pessoa Jurídica) is the Brazilian national registry for companies. CNPJ has 14 digits compared to CPF's 11 digits.

External Resources

Frequently Asked Questions

What is a Brazil CPF Checker or CPF Validator?

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A Brazil CPF Checker or CPF Validator is a tool that verifies whether a CPF number follows the correct mathematical algorithm used by the Brazilian government. Our generator creates CPF numbers that pass validation checks.

What is a CPF number?

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CPF (Cadastro de Pessoas Físicas) is the Brazilian individual taxpayer registry identification. It's an 11-digit number used for tax purposes and required for many transactions in Brazil, similar to SSN in the USA.

How are CPF numbers generated?

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CPF numbers consist of 9 base digits plus 2 verification digits. The verification digits are calculated using a specific algorithm (modulo 11) that validates the entire number. Our generator follows this exact algorithm.

What is the purpose of a CPF number?

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CPF is required for opening bank accounts, filing taxes, signing contracts, buying property, and many other official transactions in Brazil. It's the primary identification number for Brazilian citizens and residents.

What happens if I enter the wrong CPF number?

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Most systems validate CPF numbers mathematically before accepting them. If the check digits don't match the base number, the CPF will be rejected as invalid.

Is a CPF number sensitive or confidential?

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Yes, real CPF numbers are sensitive personal information in Brazil. They should be protected like Social Security Numbers in the USA. The numbers generated here are for testing only and not assigned to real people.

What are some common mistakes when using CPF numbers?

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Common mistakes include: using all same digits (like 111.111.111-11), transposing digits, forgetting the check digits, and confusing CPF with CNPJ (company numbers).

What are some best practices when using CPF numbers?

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For testing: use generated numbers, validate format before submission, store securely, and never use real CPF numbers in test environments. Always use our generator for development purposes.