What is Credit Card Validator?
Credit Card Validator checks if a card number is valid using the Luhn algorithm (modulus 10). It identifies the card network (Visa, Mastercard, Amex, etc.) and validates the number structure. Useful for form validation and testing payment systems.
Common Use Cases
Form Validation
Validate card numbers before submitting to payment processors.
Testing
Verify test card numbers in development environments.
Fraud Detection
Quick check to filter obviously invalid card numbers.
Data Quality
Validate card numbers in datasets and databases.
How to Use This Tool
- Enter a credit card number
- The tool validates using the Luhn algorithm
- View the detected card network
- See detailed validation results
Related Tools
Learn More
- ISO/IEC 7812 — Numbering system The ISO standard behind the IIN/MII structure and Luhn check digit validation.
- EMVCo — Specifications Official payment-spec body (EMV 4.x) governing card data formats.