Validate Credit Card Numbers

Check a credit card number with our online checker!



Check your credit card number

  • Visa
  • Mastercard
  • American Express
  • Discover
  • JCB
  • Diners Club
Click to Validate

Example credit card numbers need more test data?

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

Luhn Algorithm Check

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

The credit card number you entered passed the Luhn Check and is therefore a valid credit card number!

The credit card number you entered failed the Luhn Check. It's not valid, did you make a typo?

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

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


What checks will we perform on your number?

We perform some checks on your number and explain what each part of it means.

That being said, we we'll show you results for:


How many digits in a Credit Card Number?

Card length:

  • Visa and Visa Electron: 13 or 16
  • Mastercard: 16
  • Discover: 16
  • American Express: 15
  • Diner's Club: 14 (including enRoute, International, Blanche)
  • Maestro: 12 to 19 (multi-national Debit Card)
  • Laser: 16 to 19 (Ireland Debit Card)
  • Switch: 16, 18 or 19 (United Kingdom Debit Card)
  • Solo: 16, 18 or 19 (United Kingdom Debit Card)
  • JCB: 15 or 16 (Japan Credit Bureau)
  • China UnionPay: 16 (People's Republic of China)

Tips for Card and PIN Safety

  • Sign your card as soon as you receive it.
  • Safeguard your card as though it was cash.
  • Memorize your PIN. Never write it down.
  • Make sure you receive your card back from the salesclerk or waiter when you use it.
  • Shred receipts that contain the full account number if you do not need to keep them.
  • Review your account statements as soon as you receive them to make sure all the transactions are yours.
  • Make a list of your credit card numbers and customer service phone numbers and store it in a locked place. This will make it easier for you to call to cancel the cards if your purse or wallet is lost or stolen.

Is this online checker tool safe to use?

This service is safe to use. The only risk is if anyone is literally looking at your screen while you use the website.

We can't and won't access any of the data you insert in the website, including you credit card number. All the computations are performed in your browser so that your credit card number remains safely with you.

If you are technically inclined you can look behind the scenes and make sure that absolutely no contact is being made with our server, no cookies are being set, no local storage is being used. If you're not technically inclined, ask politelly to a friend who is, and make sure!