Welcome to the Credit Card Number Generator & Validator tool! This application is designed to help you effortlessly create and validate credit card numbers, ensuring they meet the necessary criteria for testing and development purposes.
Whether you're a developer testing payment systems or simply looking to generate card numbers for educational purposes, our Credit Card Number Generator & Validator is the perfect solution. Try it now and simplify your testing process!
Credit card validation is essential for ensuring that the entered numbers are legitimate and can be processed. A popular method for validating credit card numbers is the Luhn algorithm, a simple checksum formula that helps verify the authenticity of the card number.
Step | Result |
---|---|
Original Card Number: | 4 5 5 6 7 3 7 5 8 6 8 9 9 8 5 5 |
Remove Last Digit: | 4 5 5 6 7 3 7 5 8 6 8 9 9 8 5 |
Reverse Digits: | 5 8 9 9 8 6 8 5 7 3 7 6 5 5 4 |
Double Odd Position Digits: | 10 8 18 9 16 6 16 5 14 3 14 6 10 5 8 |
Adjust Results Above 9: | 1 8 9 9 7 6 7 5 5 3 5 6 1 5 8 |
Sum of All Adjusted Numbers: | 85 |
Final Check (Modulo 10): | 85 modulo 10 = 5 (should match last digit) |
Card Type | Starting Digits (IIN Range) | Card Length (Digits) |
---|---|---|
American Express | 34, 37 | 15 |
MasterCard | 51, 52, 53, 54, 55 | 16 |
Visa | 4 | 13, 16, 19 |
Discover | 6011, 622126 to 622925, 644 to 649, 65 | 16-19 |
By following the steps outlined above, you can effectively validate credit card numbers and ensure they are genuine and properly formatted. This is crucial for any system that handles payment processing to minimize fraud and ensure customer trust.