Skip to main content
FreeFormatHub
💳

Credit Card Validator

Validate credit card numbers using industry-standard algorithms, detect card brands, verify expiry dates, and check BIN information.

Quick Test Cards

Additional Validation

Security Notice

🔒 Privacy Protected
• All validation happens in your browser
• No data is sent to any server
• Use only test cards for development
• Never enter real card details online

Credit Card Number

16 characters
Syntax: text

Output

Output will appear here

How It Works

Input Your Data

Paste, type, or upload your data directly into the credit card validator. All processing happens locally in your browser for complete privacy and security.

Configure Options

Customize the tool settings to match your specific needs. Real-time processing with instant validation and error detection.

Process Instantly

Click the process button or enable auto-processing for real-time results. Lightning-fast performance with immediate feedback and validation.

Export Results

Copy results to clipboard, download as files, or share with others. Multiple export formats available for maximum compatibility.

Frequently Asked Questions

How does the Luhn algorithm work?
The Luhn algorithm validates card numbers using a checksum formula. Starting from the right, every second digit is doubled. If the result is greater than 9, subtract 9. Sum all digits - if divisible by 10, the number is valid.
Are test card numbers safe to use?
Yes, test card numbers are specifically designed for testing and will never be charged. They pass validation but are not connected to real accounts. Always use test cards for development.
What card brands are supported?
Supports Visa, Mastercard, American Express, Discover, JCB, Diners Club, UnionPay, and Maestro with their specific formatting and validation rules.
Does this tool store card information?
No, all validation happens client-side in your browser. No card information is transmitted to servers or stored anywhere. The tool is designed for privacy and security.
Can I validate expiry dates and CVV codes?
Yes, the tool can validate expiry dates (MM/YY or MM/YYYY format) and CVV codes (3-4 digits depending on card type) when provided as additional inputs.

Related Tools