Verify if a credit card number is valid using the Luhn algorithm (Mod 10 check). This tool also identifies the card issuer (Visa, Mastercard, American Express, Discover, etc.) based on the IIN ranges. This validator checks the mathematical validity of the number format; it does not check if the account is active or has funds. Processing is client-side. We do not store, log, or transmit any card numbers entered here.
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Credit Card Validator & Luhn Check
Validate credit card numbers using the Luhn algorithm. Identify card type (Visa, Mastercard, Amex) securely offline. Fast, free, and 100% private browser tool.
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About Credit Card Validator & Luhn Check
1
Enter Number
Paste the card number you want to check for validity.
2
Identify Brand
Our tool automatically detects the network (Visa, MC, etc.).
3
Luhn Check
Verify the mathematical correctness of the number instantly.
Key Features
Luhn Validation
Checks if the card number passes the mathematical Luhn formula.
Identify Issuer
Automatically detects Visa, Mastercard, Amex, and others.
Instant Feedback
Real-time validation as you type.
Secure & Private
Numbers are processed locally and never sent to a server.
Frequently Asked Questions
Absolutely not. The validation happens entirely in your browser JavaScript. We never see or store the data.
No. It only validates that the number is mathematically possible and correctly formatted.
Yes, due to client-side processing. However, always be cautious with financial data.
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