Credit Card Number Generator
Generate fake, Luhn-valid credit card numbers for testing payment forms and checkout flows. These are not real accounts and cannot be used to make purchases.
These numbers pass the Luhn checksum used to validate card number formats, but they are not linked to any real account, bank, or funds. They cannot be used to make purchases. Use them only for testing forms, checkout flows, or software that validates card number formats.
Card Number
Expiry
CVV
Recommended Settings
Pro Tips
- •Every generated number passes the Luhn algorithm, the same checksum real card numbers use, so it's useful for testing format validation
- •These numbers use recognizable test-style prefixes (like Visa's leading 4) but are not tied to any real bank or account
- •The expiry date and CVV are also randomly generated and hold no real meaning
- •Never enter real card details into a random generator tool like this one - it only works in the other direction, generating fake data
Most Popular
Most developers use Visa or Mastercard test numbers as the default when testing a checkout form
When to Use This Tool
Test that a checkout form correctly validates card number format and length.
Populate automated test suites with realistic-looking but non-functional card numbers.
Fill in placeholder card details when demoing an application's UI.
See how a valid check digit is calculated for a card number.
How It Works
Start with a recognizable prefix for the selected card type (like Visa's leading 4)
Fill the remaining digits randomly, then calculate a valid Luhn check digit for the final position
Generate a random future expiry date and an appropriately-sized CVV to complete the sample card
100% Private
Files never leave your device. All processing happens locally in your browser.
Lightning Fast
Powered by Client-side Luhn algorithm implementation for optimal performance on modern browsers.
Open Source
Built with verified, open-source libraries. Fully transparent.
Frequently Asked Questions
Can these numbers be used to make real purchases?
No. They are not linked to any real bank, account, or funds. They only satisfy the Luhn checksum format check - a real payment processor requires an actual issued card behind the number, which these don't have.
Is this legal to use?
Yes, generating format-valid test numbers for testing and development purposes is standard practice, similar to the official test card numbers published by payment processors like Stripe and PayPal.
What is the Luhn algorithm?
It's a simple checksum formula used to validate a variety of identification numbers, including credit card numbers, to catch simple typos or transcription errors.
Is my data sent to a server?
No. Every number is generated entirely in your browser. Nothing is transmitted anywhere.
Why does Amex generate a different length?
American Express cards use 15 digits and a 4-digit CVV, while Visa, Mastercard, and Discover use 16 digits and a 3-digit CVV - this tool follows each network's real format.