What the Test Credit Card Generator does
This tool creates fake but structurally valid credit card numbers for testing checkout forms, payment validation, and QA work. Each number passes the Luhn checksum and follows the correct prefix and length for Visa, Mastercard, or American Express. To be clear: these are dummy numbers for development only. They are not connected to any account and cannot be charged.
It is handy for developers building payment flows, QA testers filling out order forms, and anyone who needs sample card data without touching real cardholder details.
How to use it
- Pick a card type from the Brand dropdown: Visa, Mastercard, or American Express.
- In the How many field, enter how many numbers you want (anywhere from 1 to 100, with 5 set by default).
- Press Generate (the page also refreshes the list automatically when you change an option).
- Read the results in the output box. Each line is grouped in spaced blocks for easy scanning.
- Hit Copy to send the whole batch to your clipboard, then paste it into your test form or script.
Visa numbers start with 4 and run 16 digits, Mastercard uses a 51 to 55 prefix at 16 digits, and Amex starts with 34 or 37 at 15 digits, matching how real issuers format their ranges.
Why generate test cards here
The whole thing runs inside your browser. Nothing is sent to a server, so there is no logging and no waiting on a network call. It is free, needs no account, and works the same on a phone or a laptop. Because every number is Luhn-checked, it will clear basic format validation in most checkout code.
Tip: use the expiry date and any random 3 digit CVV (4 for Amex) that your form expects. The generator covers the card number itself, which is the part that needs a valid checksum.
Reminder: these are for software testing and QA only. Never use them for an actual purchase or to impersonate a real card.
Frequently asked questions
- Are these test credit card numbers real or chargeable?
- No. They are dummy numbers that only pass the Luhn checksum and use the right prefix and length per brand. They are not linked to any account and cannot be used for real purchases. Use them strictly for development and QA.
- Which card brands can I generate?
- Three: Visa (16 digits, starts with 4), Mastercard (16 digits, 51 to 55 range), and American Express (15 digits, starts with 34 or 37). Pick the one you need from the Brand dropdown.
- Do these numbers pass the Luhn check?
- Yes. Every generated number is completed with a valid Luhn check digit, so it will clear standard card-number format validation used in most checkout and payment code.
- How many cards can I generate at once?
- Anywhere from 1 to 100 per batch. Set the count in the How many field, click Generate, then use Copy to grab the whole list at once.
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Last updated: June 15, 2026