Credit Card Validator (Luhn)
Check whether a card number passes the Luhn checksum and detect its brand — all in your browser.
SponsoredAOS·1AOS-1 MarketplaceDiscover agents, tools & integrations for the Agentic Operating System — by mAIb Tech.Explore the Marketplace →Numbers are never sent anywhere — checked locally with the Luhn algorithm.
How to use
- Type or paste a card number (spaces are fine).
- It's checked against the Luhn formula and the brand is detected.
- Use test numbers like 4242 4242 4242 4242.
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FAQ
Does Luhn mean the card is real?
No — Luhn only checks the number is well-formed. It doesn't confirm the card exists or has funds.
Is my card number stored?
No — validation runs entirely in your browser and nothing is transmitted.
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