Card Number Validator
Validate credit card numbers using the Luhn algorithm (mod 10). Detect card type and verify number authenticity.
Validate Card Number
Enter a credit card number to check if it passes Luhn validation
About Luhn Algorithm
The Luhn algorithm, also known as the "modulus 10" or"mod 10" algorithm, is a simple checksum formula used to validate credit card numbers, IMEI numbers, and other identification numbers.
It detects accidental errors such as single-digit mistakes and transpositions of adjacent digits. However, it does not verify that the card is active or has sufficient funds - it only checks the mathematical validity of the number format.
Supported Card Types
Visa
Mastercard
American Express
Discover
JCB
Diners Club
Maestro
UnionPay