Does this check if the card has funds?

No. This tool only performs a mathematical check (Luhn algorithm) to verify the number is formatted correctly. It cannot verify balances, expiration, or CVV.

Absolutely. The validation runs entirely client-side using JavaScript. Your card number is never transmitted, saved, or logged.

What is the Luhn Algorithm?

It is a simple checksum formula used to validate a variety of identification numbers, such as credit card numbers and IMEI numbers, designed to protect against accidental typing errors.

Credit Card Checker

Validate credit card numbers using the Luhn Algorithm. (Fully offline, no data is saved)

What is the Credit Card Checker?

The Credit Card Checker validates the mathematical integrity of a credit card number using the Luhn Algorithm. It detects the card network (Visa, MasterCard) without storing data.

How to use it

Begin typing the credit card number.
The tool will automatically format the spacing and run the checksum.
It will display the card brand and validation status.

Credit Card Checker

What is the Credit Card Checker?

How to use it

Frequently Asked Questions