Credit Card Validator
Validate credit card numbers using the Luhn algorithm and detect card issuers
Validate Card Number
Enter a credit card number to validate (spaces are automatically added)
How it works:
- • Uses Luhn algorithm for validation
- • Detects major card issuers automatically
- • Validates card number length and format
- • No data is stored or transmitted
Validation Results
Enter a card number to see validation results
About This Credit Card Validator
This Credit Card Validator helps you check if a card number is valid using the Luhn algorithm and detects the card issuer and type. It is useful for individuals and businesses to quickly verify card numbers before processing payments.
How It Works
- Enter a card number and the tool will check its validity using the Luhn checksum.
- Detects the card issuer (Visa, MasterCard, Amex, etc.) and card type based on number patterns.
- No data is stored or transmitted—validation is 100% local and private.
Why Use This Validator?
- Quickly check if a card number is valid before submitting payments online.
- Helps reduce errors and failed transactions for businesses and developers.
- Supports all major card types and issuers.
- Safe and private—no card data ever leaves your device.
Frequently Asked Questions
Does this tool check if the card is active or has funds?
No, it only validates the card number's format and checksum using the Luhn algorithm. It cannot verify if the card is active, has funds, or is authorized for transactions.
Is my card number sent or stored anywhere?
No, all validation is performed locally in your browser. Your card number is never sent to any server or stored anywhere.
What card types are supported?
The validator supports all major card types including Visa, MasterCard, American Express, Discover, JCB, Diners Club, and UnionPay.
Can I use this for business transactions?
Yes, this tool is helpful for businesses to validate card number formats before processing payments, reducing errors and failed transactions.