Credit Card Validator (Luhn & brand)
LiveCheck a card number with the Luhn algorithm.
All generated data is fictional and intended for development, testing, QA, prototyping, and automation only. Do not use it for fraud, impersonation, or illegal activity.
ValidValid card number (Luhn ok).
- Brand
- Visa
- Formatted
- 4111 1111 1111 1111
- Length
- 16
About this tool
Paste a card number (spaces and dashes are ignored) to check whether it passes the Luhn checksum used by every major card network, and to detect its brand from the IIN/BIN prefix. This is a format/checksum check only — it does not verify that the card exists, is active, or has funds. Use fictional numbers for testing.
Example output
{
"valid": true,
"reason": "Valid card number (Luhn ok).",
"Brand": "Visa",
"Formatted": "4111 1111 1111 1111",
"Length": "16"
}