Credit Card Validator
Enter Credit Card Number
Enter a credit card number to validate using the Luhn algorithm
Test Cards
Lengths: 13, 16, 19 digits
Starts with 4
Lengths: 16 digits
Starts with 5 or 2
Lengths: 15 digits
Starts with 34 or 37
Lengths: 16 digits
Starts with 6
Lengths: 14 digits
Starts with 30, 36, 38, 39
Lengths: 15, 16 digits
Starts with 2131, 1800, or 35
Lengths: 16, 17, 18, 19 digits
Starts with 62 or 88
Lengths: 12, 13, 14, 15, 16, 17, 18, 19 digits
Starts with 50, 56, 57, 58, or 6
Validate credit card numbers using the Luhn algorithm. Check card type, validity, and format for Visa, Mastercard, American Express, Discover, and other major card types. Perfect for developers and payment form validation!
What is Credit Card Validation?
Credit card validation uses the Luhn algorithm to verify if a card number is mathematically valid. It also identifies the card type based on the number pattern. Examples:
- Visa: 4111 1111 1111 1111 (test number)
- Mastercard: 5555 5555 5555 4444 (test number)
- American Express: 3782 822463 10005 (test number)
Why Use Credit Card Validator?
- ✅ Payment Form Validation
- ✅ E-commerce Development
- ✅ Testing Payment Systems
- ✅ Fraud Prevention
- ✅ User Experience Improvement
Supported Card Types
Major Cards
- Visa (4xxx)
- Mastercard (5xxx, 2xxx)
- American Express (34xx, 37xx)
- Discover (6xxx)
Other Cards
- Diners Club
- JCB
- UnionPay
- Maestro
How It Works?
Luhn Algorithm
- Starting from the rightmost digit, double every second digit
- If doubling results in a two-digit number, add the digits
- Sum all the digits
- If the total is divisible by 10, the number is valid
Card Type Detection
Card types are identified by the first few digits (BIN - Bank Identification Number) and the total length of the card number.
Frequently Asked Questions
Is this tool safe to use?
Yes! This tool runs entirely in your browser. No card numbers are sent to our servers or stored anywhere. All validation happens locally.
Can I use this for real transactions?
This tool is for validation and testing purposes only. For real transactions, always use proper payment processors with PCI compliance.
What if a valid card number fails validation?
The Luhn algorithm catches most typos and invalid numbers. If a valid number fails, double-check for spaces, dashes, or other formatting issues.