Online Credit Card Validator

Credit Card Validator

To use Card Validator, Paste card no in the given input box below and click on validate credit card button.

Check your credit card number

Visa
Mastercard
American Express
Discover
JCB
Diners Club

Example credit card numbers

Credit Card Type	Credit Card Number
American Express	371449635398431
Diners Club	30569309025904
Discover	6011111111111117
JCB	3530111333300000
MasterCard	5555555555554444
Visa	4111111111111111

Passed Validation Failed

Luhn Algorithm Check

We'll check your number against the Luhn Algorithm to see if it is a valid credit card number.

Major Industry Identifier

The first digit of a credit card number represent the category of entity which issued the card.

Issuer identification number

The first six digits of a card number identify the institution that issued the card to the card holder.

Personal Account Number

igits 7 to final number minus 1 (the last is the checksum) indicate the individual account identifier.

Validate Card

About Credit Card Validator

The Online Credit Card Validator is a simple, secure tool that helps you verify whether a credit card number is formatted correctly and passes basic validation checks. Whether you are a developer testing payment forms, a merchant verifying customer input, or a security analyst screening data, this credit card validation tool gives fast feedback about card number validity and card type (Visa, MasterCard, AMEX, Discover, etc.).

This tool does not check account balances or perform transactions — it validates structure, detects common input errors, and runs a Luhn check to flag invalid numbers before they reach payment processors.

What Is an Online Credit Card Validator?

An Online Credit Card Validator checks a card number for:

Proper length and numeric format for known card brands.
Matching issuer prefixes (BIN/IIN ranges) to identify card type.
Luhn algorithm validity (a standard checksum used to detect typing errors).

It helps reduce failed transactions, cut down on typos, and improve user experience by catching bad input early.

Example: Validation Output

Input Card Number (masked)	Card Type	Luhn Check	Result
4111 11XX XXXX 1111	Visa	Passed	Valid format — ready for gateway check
5500 00XX XXXX 0004	MasterCard	Failed	Invalid: fails Luhn check

This table shows the typical output you’ll get from an online credit card validator — card type detection plus Luhn pass/fail.

How the Credit Card Validator Works

Sanitize Input: Removes spaces and non-numeric characters.
Detect Card Type: Matches initial digits and length to known issuer patterns (e.g., Visa starts with 4).
Luhn Check: Applies the Luhn algorithm to verify checksum validity.
Return Result: Displays card brand, whether the number passes Luhn, and whether formatting looks correct.

The validator works instantly in your browser and helps you filter out invalid numbers before calling payment APIs.

Why Use an Online Credit Card Validator?

Reduce Declines: Catch formatting errors and mistyped digits before submitting to the gateway.
Better UX: Prompt users to correct mistakes immediately.
Save API Calls: Avoid unnecessary payment processor requests for obviously invalid numbers.
Fraud Prevention: Combined with other checks (CVV, AVS, device signals) it supports risk reduction.
Developer Testing: Useful during form validation and QA of payment flows.

Remember: card validation only checks structure and checksum — it does not confirm that a card is active or has funds.

Features of This Credit Card Validation Tool

Instant Luhn algorithm check.
Card brand detection (Visa, MasterCard, AMEX, Discover, JCB, etc.).
Input sanitization and masked display.
Works on all devices and browsers.
No data stored — validation runs locally for privacy.

How to Use the Online Credit Card Validator

Paste the credit card number into the input box (or type it).
Click Validate.
See results: detected card type, Luhn pass/fail, and helpful hints to fix formatting.

Use this tool in form validations or during development to improve payment success rates.

Safety & Legal Notice (Important)

This Online Credit Card Validator is intended only for legitimate testing, form validation, and fraud-prevention workflows. Do not use it to attempt unauthorized transactions, test stolen card numbers, or commit fraud. Misusing card data is illegal and unethical. For payment testing, use official sandbox/test card numbers provided by payment gateways (Stripe, PayPal, etc.).

Frequently Asked Questions (FAQs)

Q1. Does this tool charge the card or check balances?
No — it only validates format and checksum. It cannot check balances or perform transactions.

Q2. Is the validator secure?
Yes — validation runs locally in the browser and no card numbers are stored or transmitted. For production, always follow PCI DSS guidelines.

Q3. What is the Luhn check?
The Luhn algorithm is a checksum formula used to validate various identification numbers, including most credit cards. A failed Luhn check usually indicates a mistyped or invalid number.

Q4. Can I validate multiple numbers at once?
Some tools support bulk validation, but be careful to handle data securely and comply with privacy rules. Prefer masked or test data for bulk operations.

Q5. Will a passed validation guarantee successful payment?
No — a passed validation only means the number is well-formed. Authorization and settlement depend on the issuer and payment gateway.

Conclusion

The Online Credit Card Validator is a quick, privacy-friendly way to validate credit card numbers before sending them to payment processors. It improves user experience, reduces failed transactions, and helps developers and merchants catch common input errors early. Use it for form validation and testing — and always follow legal and security best practices when handling card data.