Credit Card Validator

Check locally whether a card number has a plausible format and valid Luhn check digit without sending or saving the number.

About the card validator

The card validator locally checks whether a digit sequence has plausible length and a check digit compatible with the Luhn algorithm. It does not query issuer, BIN/IIN, bank, network, cardholder, or gateway data.

How to validate a card with Luhn

Type or paste only the number, review the status, and read the checklist. Use the tool as typing support: a valid Luhn result does not prove that the card exists, is active, has funds, is authorized, or will be accepted for a purchase.