Credit Card Test Generator-- Luhn-Valid Test Numbers

Generate Luhn-valid test credit card numbers for development and testing.

Credit Card Test Generator Tool

Disclaimer: These are fake test numbers for development purposes only. They are NOT real credit card numbers and cannot be used for transactions.

Why Use Our Credit Card Test Generator?

4 Card Types

Visa, Mastercard, Amex, and Discover.

Luhn Valid

All numbers pass Luhn checksum validation.

Test Only

Numbers are for development testing only.

Bulk Generate

Generate up to 20 numbers at once.

One-Click Copy

Copy all numbers to clipboard.

Free Forever

No signup, no limits, completely free.

Other Generator Tools

Mock Data

Generate mock data

Fake Address

Generate fake addresses

Password Gen

Generate secure passwords

Random Number

Generate random numbers

Credit Card Testing Guide

The Luhn algorithm (also known as the "modulus 10" algorithm) is a simple checksum formula used to validate credit card numbers, IMEI numbers, and other identification numbers. It works by doubling every second digit from right to left, subtracting 9 from digits over 9, and checking if the total modulo 10 equals zero.