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Credit Card Generator

Generate valid credit card numbers through Luhn, by brand, just to test forms and systems.

Os números gerados são aleatórios e válidos apenas pelo algoritmo de Luhn. Não pertencem a cartões reais, não têm saldo e não são consultados em nenhuma bandeira ou banco. Destinam-se exclusivamente a testes de sistemas. Utilizar dados falsos para fraude é crime (art. 299 do Código Penal).

What is it

Credit Card Generator is a free online tool that creates valid card numbers using the Luhn algorithm, separated by brand (Visa, Mastercard and others), accompanied by a fictitious expiration date and CVV. It is important to make it clear from the beginning: this data is totally false and has no financial value. No number generated here is linked to a real bank account, credit limit or any person. They only exist for one technical purpose: testing forms, integrations and systems that need to receive a card number in a format that passes the first mathematical check.

In practice, the Luhn algorithm is a simple calculation that checks whether the sequence of digits is coherent. Many sites use this check to warn the user when they enter a wrong number, before even consulting the operator. Therefore, anyone who programs, tests software or sets up an online store usually needs numbers that "pass" this test without using a real card.

Important notice: using card data, real or false, to deceive someone, bypass payment systems or try to buy something is fraud, and fraud is a crime provided for by law. The numbers generated here do not work for purchases and should never be used for this purpose. The tool is only for legitimate development and testing.

How to use

Using the generator is quick and does not require registration:

  • Choose the brand you want (for example, Visa or Mastercard) or leave it as a random option.
  • Click the button to generate the number. The tool creates the sequence already valid by the Luhn algorithm.
  • Copy the displayed number, expiration and CVV and paste it into the form or test environment you are using.
  • If you need multiple examples, generate them again as many times as you want.

Everything happens directly in your browser, simply and immediately.

Tips

  • Use the numbers only in approval or sandbox environments, never in a real payment system.
  • Combine with other Toolbox generators (such as CPF) to complete complete test registrations.
  • Remember that validity and CVV are made up and do not represent any existing card.
  • Never share or publish data as if it were real: even if it is fictitious, misuse may constitute an attempt at fraud.

Perguntas frequentes

Do the generated card numbers work to purchase?

No. The numbers are fictitious and are not linked to any account, bank or credit limit. They only pass the mathematical verification of the Luhn algorithm, but they have no balance or real validity with operators. They are only used to test software.

Is it a crime to use these numbers to try to make a purchase?

Yes. Using card details, whether false or real, to deceive payment systems or buy something is fraud, which is a crime provided for by law. This tool only exists for legitimate technical testing and should never be used for fraud.

What is a test credit card generator for?

It is useful for those who program, test systems or set up virtual stores and need a number in a valid format to check if the payment form accepts, formats and validates the data correctly, without using a real card.

What is Luhn's algorithm?

It is a simple calculation that checks whether the sequence of digits on a card is coherent. Many websites use this check to warn when the user enters a wrong number. The numbers generated here pass this test, but remain fictitious.

Do I need to pay or register to use it?

No. The tool is free and without registration. You choose the flag, generate the number and copy the data instantly, all directly in your browser.

Sobre este conteúdo

Escrito por:
Equipe Ferramenta Grátis
Atualizado em:
3 de julho de 2026

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