Credit Card Validator
Validate credit card number format using Luhn algorithm
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⚠️ For testing only:
This validates the card number format using the Luhn algorithm. It does NOT check if the card exists or has funds. All processing happens locally in your browser.
How to Use Credit Card Validator
- Enter a credit card number
- The format is validated using Luhn algorithm
- See the detected card type
- Learn if the number passes checksum validation
About Credit Card Validator
Validate credit card numbers using the Luhn algorithm. Identifies card type (Visa, Mastercard, Amex, etc.) and checks if the number format is valid. For testing purposes only.
Frequently Asked Questions
Does this check if the card is real?
No, it only validates the number format. It doesn't verify with banks.
Is it safe to enter my card number?
All validation happens locally in your browser. We never store or transmit your data.
What's the Luhn algorithm?
A checksum formula used to validate identification numbers including credit cards.