Credit Card Validator

Format: card_number|MM|YY|CVV • 0 lines
Total: 0 Valid: 0 Invalid: 0 Processed: 0

Valid — 0

Invalid — 0

Frequently Asked Questions

This tool performs structural validation: Luhn checksum, card network detection via BIN/IIN, length validation per network, expiry date verification, and CVV length matching.

Visa, Mastercard (including 2-series BIN), American Express, Discover, Diners Club, JCB, UnionPay, Maestro, Mir, RuPay, and Troy.

Never. All validation runs entirely in your browser. No card numbers, expiry dates, or CVV codes leave your device.

card_number|MM|YY|CVV or card_number|MM|YYYY|CVV. You can use | or : as separator. Lines starting with # are ignored.

A card may fail if the number length doesn't match its network, the Luhn checksum is wrong, the expiry is in the past, or the CVV length is incorrect for that card type.

Absolutely not. This tool is for educational and testing purposes — helping developers, QA engineers, and security researchers understand payment card validation standards (ISO/IEC 7812). Never use real card numbers.

What is a Credit Card Validator?

A credit card validator is a developer utility that verifies card numbers using multiple checks including the Luhn algorithm, BIN/IIN range detection, expiry date validation, and CVV format checking. This tool helps determine whether a card number is structurally valid for testing payment systems and e-commerce platforms — all processed locally in your browser with no data sent to any server.

How Credit Card Validation Works

  1. Luhn Algorithm: Validates the checksum of the card number (Mod 10 check)
  2. BIN Detection: Identifies the card network (Visa, Mastercard, Amex, etc.) from the first 6-8 digits
  3. Length Check: Verifies the card number length matches the detected network
  4. Expiry Validation: Checks if the expiry date is in valid MM/YY format and not expired
  5. CVV Check: Validates CVV length (3 digits for Visa/MC, 4 for Amex)

Common Use Cases

  • Payment Form Testing: Validate test card numbers in checkout forms
  • QA Automation: Bulk validate test datasets for CI/CD pipelines
  • Development: Test payment integration logic with realistic card data
  • Education: Learn about Luhn algorithm and card number structure

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