ToolerCat / Test Card Generator / American Express Test Card Generator

American Express Test Card Generator

Luhn-valid American Express numbers with expiry, CVV and fake cardholder data for testing.

Click the card to see the CVV

Output


⚠ For testing form validation, UI and QA fixtures only. Generated numbers pass the Luhn check but are random — they are not real accounts and will be declined by any live payment system. To test real payment flows use a provider's official sandbox cards.




American Express card number format
American Express numbers start with 34, 37, have 15 digits and a 4-digit security code. The last digit is a Luhn check digit, which lets forms catch typos before sending the card to the payment provider.
Official sandbox test numbers for American Express
These work in the providers' test mode (unlike generated numbers):
ProviderNumberScenario
Stripe378282246310005Successful payment
Adyen370000000000002Successful payment
FAQ
How many digits does an American Express card have?
15 digits, with a 4-digit security code.
Are generated card numbers real?
No. They follow the brand's prefix and length rules and pass the Luhn checksum, so they look valid to front-end validation, but they are random and not linked to any bank account. Any real authorization will fail.
What can I use them for?
Testing checkout form validation, input masks and brand detection, filling QA databases and fixtures, UI screenshots and demos, and load-testing tools that only need well-formed numbers.
Can I use them in Stripe or Adyen test mode?
Usually no — sandboxes only accept their own published test numbers. Use our test cards list for gateway testing.