What is the Utilo CPF and CNPJ generator for?

The generator creates valid documents only for testing, validation, and development.

Can I use the generated CPFs and CNPJs in real registrations?

No. They are only for technical simulation and should not be used in real registrations.

Do the numbers follow check digit rules?

Yes. The calculations follow the official rules used for CPF and CNPJ.

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CPF Generator

Generate valid Brazilian CPF numbers for testing.

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Fill in the fields and click generate or calculate.

Warning: this tool is intended exclusively for testing and software development. Do not use the generated documents for illegal purposes or registration of third parties without authorization.

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What is the CPF and CNPJ generator for?

This tool generates valid CPF and CNPJ numbers exclusively for use in testing, validation, and system development. The numbers follow all official rules for calculating check digits.

How to use

Select whether you want to generate a CPF or CNPJ.
Click Generate.
Use the Copy button to use the value in tests.

Frequently asked questions

Can I use it for real registrations?

No. The generated documents are for testing only.

Do the numbers follow official rules?

Yes. The check digit calculation respects the standards.

Are the values stored?

No. Nothing is saved in the database.