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Credit Card Validator

Validate credit card numbers using Luhn algorithm and identify card type

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About This Tool

Credit Card Validator checks credit card numbers using the Luhn algorithm and identifies the card type including Visa, Mastercard, Amex, Discover, JCB, and Diners Club. It features a visual card preview that updates in real time, validates expiry dates, and checks CVV length β€” all running locally in your browser.

Key Features

Quick Preview

Use Cases

credit card validation luhn

Frequently Asked Questions

What is the Credit Card Validator?

The Credit Card Validator is an online tool that validates credit card numbers using the Luhn algorithm and identifies the card type. It also validates expiry dates and CVV lengths, with a visual card preview that updates in real time.

What card types does it support?

The validator supports Visa, Mastercard, American Express, Discover, JCB, and Diners Club. It automatically detects the card type based on the number prefix and adjusts the expected card number length and CVV digits accordingly.

What is the Luhn algorithm?

The Luhn algorithm is a simple checksum formula used to validate identification numbers, including credit card numbers. It works by summing digits with a doubling pattern and checking if the total is divisible by 10. Most major card networks use this algorithm.

Is my card data safe when using this tool?

Absolutely. All validation happens locally in your browser. No data is uploaded to any server, ensuring your card information remains completely private and secure.

Can I use this tool on my phone?

Yes, the Credit Card Validator is fully responsive and works on all devices including smartphones, tablets, and desktop computers.