Credit Card Generator
Generate test credit card numbers — Luhn-valid, for payment testing.
⚠️ Luhn-valid TEST numbers only — for form/dev testing. They are not real cards and cannot be used for payments.
How to use Credit Card Generator
- Generate a test card number — Luhn-valid, in a real card format.
- Use it to test your form's format validation — does it accept valid, reject invalid?
- For real payment-flow testing, use your processor's official test cards (Stripe, PayPal sandbox).
- Never attempt real purchases — these are non-functional test numbers; misuse is fraud.
What is Credit Card Generator?
A credit card generator produces test credit card numbers that pass format and Luhn-checksum validation — but are NOT real cards and cannot be charged. They're for developers testing payment forms, checkout flows and card-validation logic, where you need numbers that look and validate like real cards without using (or having) an actual card.
Let's be completely clear up front: these are TEST numbers for legitimate development. They are not connected to any account, hold no money, and cannot be used to buy anything. They exist so developers can test that their payment code correctly recognizes and validates card number formats.
About the Credit Card Generator
Generate test card numbers (Visa, Mastercard, etc. formats) that pass Luhn validation, for use in development and testing.
The legitimate use: testing payment forms — verifying your checkout form correctly accepts valid-format numbers and rejects invalid ones; testing card-type detection — checking your code identifies Visa vs Mastercard vs Amex from the number pattern; testing validation logic — confirming your Luhn-checksum validation works (our Credit Card Validator explains Luhn); and development without real cards — building payment features without exposing real card data.
Critical context on how real payment testing works: for actually testing PAYMENTS (not just form validation), payment processors provide their OWN dedicated test card numbers (Stripe, PayPal, Square all publish test cards like 4242 4242 4242 4242) that work in their sandbox/test mode to simulate successful charges, declines and errors — those are what you use for real payment-flow testing, and you should use the processor's official test cards for that. This generator's numbers are for testing your form's FORMAT validation (does it accept a Luhn-valid number?), not for simulating transactions. And the absolute line: these numbers cannot be used for fraud — they're not real accounts, generating or attempting to use fake numbers for actual purchases is fraud and a crime. This is a development tool for testing your own validation code. Pair with our Credit Card Validator (to test the reverse) and Fake Data Generator (for other test fields).