Cómo usar: Credit Card Validator
- Type or paste a card number — spaces and dashes are fine.
- See the brand, whether the length fits that brand and whether the Luhn checksum passes.
- Testing a payment form? Click a test number to use it; payment providers accept these in test mode only.
- Paste a list into Bulk check to validate many numbers at once.
The Luhn algorithm
Almost every payment card number ends with a check digit calculated with the Luhn (mod 10) algorithm. From the right, every second digit is doubled (subtracting 9 if the result is over 9), all digits are added up, and the total must end in 0. It catches most typos — a wrong digit or two swapped neighbors — before a form even contacts the bank.
Card brands by first digits
| Brand | Starts with | Length |
|---|---|---|
| Visa | 4 | 13, 16, 19 |
| Mastercard | 51–55, 2221–2720 | 16 |
| American Express | 34, 37 | 15 |
| Discover | 6011, 644–649, 65 | 16–19 |
| JCB | 3528–3589 | 16–19 |
| Diners Club | 300–305, 36, 38–39 | 14–19 |
| UnionPay | 62 | 16–19 |
| Maestro | 50, 56–58, 6 | 12–19 |
What it can’t tell you
A valid checksum only means the number is well-formed. Whether the card exists, is active or has funds is known only to the issuing bank, through a real payment authorization. Never use real card numbers for testing — use your payment provider’s test numbers.
También se busca como: credit card number checker, luhn check, validate card number, card type checker, bin checker, test credit card numbers, luhn algorithm, visa number validator.
Herramientas que combinan con: Credit Card Validator
- IBAN Validator — Check whether an IBAN is valid before you send money or save it: the country, the length for that country, the account format and the mod-97 checksum.
- Generador de números aleatorios — Genera números aleatorios (con o sin duplicados), elige ganadores de una lista, mezcla nombres, divide grupos en equipos, lanza monedas y tira los dados, todo ello utilizando el generador de números aleatorios criptográficamente seguro de tu navegador.
- Generador de datos ficticios — Crea hasta 10 000 filas de datos de prueba realistas —usuarios, productos, pedidos, direcciones, empresas o registros API anidados— o diseña tu propio esquema.
- Probador de expresiones regulares — Escribe un patrón y observa cómo se resaltan las coincidencias en tiempo real en tu texto de prueba.