CPF / CNPJ Generator

Brazilian taxpayer identifiers — CPF (11 digits) and CNPJ (14 digits).

Brazil Validation Generation

Try the demo NuGet: DocumentNumber.Brazil.Vat.Generator

How generation works

The CPF / CNPJ generator builds a structurally valid sample using the same rules the validator enforces — check digits included. Use it for test data and fixtures; never for production records.

Install the package

bash

dotnet add package DocumentNumber.Brazil.Vat.Generator

Generator in C#

Program.cs

using DocumentNumber.Brazil.Vat.Generator;

var generator = new VatGenerator();
var sample = generator.GenerateDocumentNumber();

Console.WriteLine(sample);

Live example

24911211903 — a real CPF / CNPJ value accepted by the validator

Try CPF / CNPJ generation

Runs the exact same library code your application uses. Nothing you enter is stored.

Frequently asked questions

What is CPF / CNPJ?

Brazilian taxpayer identifiers — CPF (11 digits) and CNPJ (14 digits).

How does CPF / CNPJ generation work?

The generator builds a structurally valid CPF / CNPJ sample using the same rules the validator enforces — including check digits. Generated values are intended for tests and development only.

How do I install the CPF / CNPJ generator package?

dotnet add package DocumentNumber.Brazil.Vat.Generator

Is the value I enter in the demo stored?

No. Demo inputs are processed in memory for the current request only and are never persisted or shared.