Luhn Algorithm Validator
Validate credit card numbers using the Luhn algorithm. Identifies card type (Visa, Mastercard, Amex, Discover) and checks validity.
Is Valid (Luhn)
Yes
Luhn algorithm check
Card Type
Visa
Detected card network
Number Length
16.00
Total digits
Check Digit
6
Last digit
Luhn Sum
80.00
Calculated checksum