Credit Card Number Generator (Test)
Generate Luhn-valid test credit card numbers for Visa, Mastercard, Amex, Discover, and JCB. For testing only.
About Credit Card Number Generator (Test)
Generate fake but Luhn-valid credit card numbers for testing payment forms and validation logic. Choose a card scheme (Visa, Mastercard, Amex, Discover, JCB) and how many to generate. These numbers pass the Luhn checksum but are not real, are not tied to any account, and cannot be charged. For development and QA only.
All processing happens entirely in your browser using modern web APIs. Nothing is uploaded to our servers — your data stays local and private. Free to use forever.
Common use cases
- Testing a payment form's card-number validation and formatting
- Generating test data that passes the Luhn check
- Verifying card-scheme detection (Visa vs Mastercard vs Amex) by prefix
- Populating QA fixtures without using real card data
- Checking input masking for 15- vs 16-digit cards
How it works
Each number starts with a real issuer prefix for the chosen scheme (e.g. 4 for Visa, 34/37 for Amex) and is padded with random digits to the correct length minus one. The final digit is computed as the Luhn check digit, so the number passes the standard mod-10 validation that payment forms use. All generation is random and client-side.