Credit Card Validator
Validate credit card numbers using the Luhn algorithm. Detect card type (Visa, Mastercard, Amex, Discover, and more). View BIN information and card details.
Privacy Notice
This tool runs entirely in your browser. No card numbers are stored, transmitted, or logged. This is a mathematical validation tool - it does not verify card existence, balance, or validity with any bank.
Supported Card Types
How to Use the Credit Card Validator
- Enter a credit card number in the input field.
- The tool auto-validates as you type (12+ digits).
- View the Luhn check result, card type, and BIN information.
About the Luhn Algorithm
The Luhn algorithm (mod 10) is a checksum formula used to validate identification numbers like credit card numbers. It detects accidental errors in the number, such as single-digit mistakes or transposition of adjacent digits. It does not verify that the card exists or has funds - only that the number is structurally valid.
Features
- Luhn (mod 10) algorithm validation
- Card type detection (Visa, Mastercard, Amex, Discover, JCB, etc.)
- BIN (Bank Identification Number) display
- Real-time validation as you type
- 100% client-side - absolutely no data is stored or transmitted
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Disclaimer: This tool is provided as-is for informational and educational purposes only.