Visa Card Validator & Generator
The most comprehensive tool for validating and generating mathematically correct Visa card numbers for testing, development, and verification.
Validator
Verify Card Details
Did you know?
All Visa card numbers start with the digit 4. This is known as the Major Industry Identifier (MII) for banking and financial cards.
Generator
Bulk Visa Generation
Comprehensive Guide to Visa Card Numbers
Anatomy of a Visa Card
Visa cards typically consist of 16 digits, though some older versions used 13 digits. The structure is meticulously designed to provide security and identification.
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First Digit (MII)
Always '4' for Visa, representing the financial industry.
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Digits 1-6 (IIN/BIN)
The Issuer Identification Number identifies the bank that issued the card.
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Digits 7-15 (PAN)
The Primary Account Number is a unique identifier for the individual account.
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Last Digit (Checksum)
Calculated using the Luhn Algorithm to prevent accidental errors.
Security & Verification
The Luhn Algorithm
Also known as the "mod 10" algorithm, it is a simple checksum formula used to validate a variety of identification numbers. It was created by IBM scientist Hans Peter Luhn in 1954.
Step 2: If result > 9, subtract 9
Step 3: Sum all digits
Step 4: If total mod 10 == 0, it's valid!
Frequently Asked Questions
Q Can I use these numbers to buy things?
No. These numbers are mathematically valid for testing purposes only. They do not have a real bank account or funds associated with them. Attempting to use them for real transactions is fraudulent.
Q Is this tool safe to use?
Absolutely. We do not store any card numbers you enter or generate. All processing is done locally in your browser for maximum privacy.
Q Why does my Visa card start with 4?
The ISO/IEC 7812 standard assigns the first digit (MII) to different industries. '4' is reserved for the banking and financial industry specifically for Visa.
Q What is a CVV/CVC code?
Card Verification Value (CVV) is a 3-digit security code printed on the back of Visa cards. Our generator provides random 3-digit codes for testing your payment forms.