Tools→Security→Credit Card Validator

Credit Card Validator

Check any card number against the Luhn checksum and detect the brand (Visa, Mastercard, Amex, Discover, JCB, Diners). Format validation only — no card data ever leaves the browser.

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Frequently Asked Questions

Is this a real check?

It validates structure via the Luhn algorithm — it does not and cannot know whether a card is active or has funds.