Credit Card Number Validator
Validate credit card numbers using the Luhn algorithm, detect card types, and generate test numbers for development.
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Credit Card Validator
Test Card Numbers
About Card Validation
This tool uses the Luhn algorithm to validate credit card numbers and recognizes patterns for major card types. All validation is done locally in your browser.
Generated test numbers are valid for testing but cannot be used for actual transactions.
Professional Validation Tool
Comprehensive credit card validation with Luhn algorithm checking and card type detection.
Card Detection
Automatically detects major credit card types including Visa, Mastercard, American Express, and more.
Luhn Validation
Uses the Luhn algorithm to validate credit card numbers and detect input errors.
Real-time Validation
Get instant feedback as you type with clear error messages and card type detection.
Test Card Generation
Generate valid test card numbers for different card types for testing purposes.
How to Use
Simple 4-step process
Step 1
Enter a credit card number or generate a test number.
Step 2
Get instant validation results and card type detection.
Step 3
View detailed error messages if the number is invalid.
Step 4
Use test card numbers for development and testing.
Frequently Asked Questions
Everything you need to know about our process, pricing, and technical capabilities.
See Full FAQThe Luhn algorithm (also known as the "modulus 10" algorithm) is a checksum formula used to validate various identification numbers, including: Credit card numbers Canadian Social Insurance Numbers IMEI numbers National Provider Identifier numbers in the United States
Credit card validation involves several checks: Length check based on card type Pattern matching for card type identification Luhn algorithm validation Card-specific validation rules
No, the generated test numbers are not real credit card numbers. They are: Valid according to the Luhn algorithm Follow correct card type patterns Safe to use for testing purposes Cannot be used for actual transactions
The validator supports major credit card types including: Visa (13, 16, or 19 digits) Mastercard (16 digits) American Express (15 digits) Discover (16 digits) JCB (16 digits) Diners Club (14 digits)
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