Luhn formula

A credit card number must be from 13 to 16 digits long. The last digit of the number is the check digit. That number is calculated from an algorithm (called the Luhn formula or MOD 10) on the other numbers. This is to spot typos when a user enters a number, and I assume was to allow detecting an error reading the magnetic stripe when a card is swiped.
The MOD 10 check does not offer security, it offers error detection. Think of it as fullfilling the same role as a CRC in software.
To calculate the check digit:

First drop the last digit from the card number (because that’s what we are trying to calculate)

Credit card numbers

Credit card numbers that conform to the Luhn formula (MOD 10 check). Usefull for testing e-commerce sites (because they should get past any pre-validation you do, and be declined at the card processor or bank stage).

In testing situations any expiry date within the next 3 years should work.

These are NOT valid credit card numbers. You can’t buy anything with these. They are random numbers that happen to conform to the MOD 10 algorithm. They are a technical resource for programmers – that’s all.

Fake Credit Card Generator

If you just need a bunch of numbers use the online credit card number generator. That page is generated by an online version of this script. The program here will only be useful to you if you know what one of Python, Java, C#, PHP or Javascript are, and how to run a program in one of them. Command line Python program, Java program, C# program, PHP script, and Javascript script to generate valid (MOD 10) credit card numbers. Useful for testing e-commerce sites. (Note: You can’t actually buy anything with these). Should run on any platform.



This generates 13 and 16 digit VISA, Mastercard, Amex, and a whole bunch of others.

VISA:

Amex:

Download all Source file from here:
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