Credit Card Generator & Validator
Generate test credit card numbers with valid Luhn checksums and validate existing card numbers
Test Data Only: These card numbers are for testing purposes only. They pass Luhn validation but are not connected to real accounts and cannot be used for actual transactions.
Generate Test Cards
Create test credit card numbers that pass Luhn validation
About Credit Card Numbers
The Luhn Algorithm
The Luhn algorithm is a checksum formula used to validate credit card numbers. It detects simple errors in typing or transmission of card numbers.
Card Number Structure
- IIN/BIN: First 6 digits identify the card issuer
- Account Number: Digits 7 to second-to-last
- Check Digit: Last digit calculated using Luhn algorithm
Common Card Types
- Visa: Starts with 4, 13-19 digits
- Mastercard: Starts with 51-55 or 2221-2720, 16 digits
- Amex: Starts with 34 or 37, 15 digits
- Discover: Starts with 6011 or 65, 16-19 digits
Legal Notice: These generated numbers are for testing and development only. Using fake credit card numbers for fraudulent purposes is illegal.