Credit Card Validator
Check if a credit card number is valid using the Luhn algorithm and identify its brand.
ℹ️ How the Credit Card Validator Works
This tool uses the Luhn algorithm to check the validity of a credit card number. The Luhn algorithm, also known as the modulus 10 formula, is a simple checksum system used to validate a variety of identification numbers, such as credit card numbers, IMEI numbers, etc. In addition to validation, the tool attempts to identify the card brand (such as Visa, MasterCard, American Express) based on the first digits of the number, known as the Issuer Identification Number (IIN).
Frequently Asked Questions
Facts about the Credit Card Validator
- The tool validates card numbers using the Luhn algorithm.
- The validator identifies the card brand from the IIN.
- The tool does not verify if the card is active or has funds.