Check a card number properly: Luhn checksum, card brand from its IIN range, expected length and the missing check digit — in your browser, with nothing uploaded.
This validator runs the same structural checks a payment form runs before it submits anything. It strips spaces and dashes, applies the Luhn algorithm (mod 10 checksum) to the digits, reads the issuer identification number to name the brand (Visa, Mastercard, American Express, Discover, Diners Club, JCB, Maestro, UnionPay, Mir) and compares the digit count with the lengths that brand actually uses. It also shows the number in the brand's usual grouping, a masked version you can screenshot safely, and the check digit that would make an otherwise complete number valid - useful when a single digit was mistyped. Batch mode checks one number per line, which is what developers and QA testers need when they run through a set of test cards. Be clear about the limit: a passing result proves the number's structure, nothing more. It does not tell you whether the card exists, is active, has funds or belongs to anyone. Nothing is uploaded, stored or logged - the whole check happens in your browser.
Free online utility tools. No signup. No tracking.
Nutzung auf eigene Gefahr. Diese Tools werden kostenlos und ohne Gewährleistung für Richtigkeit, Vollständigkeit, Verfügbarkeit oder Eignung für einen bestimmten Zweck bereitgestellt; Ergebnisse sind keine professionelle Beratung. Die gesetzliche Haftung — insbesondere für Vorsatz, grobe Fahrlässigkeit sowie für Verletzungen von Leben, Körper oder Gesundheit — bleibt unberührt.
Use at your own risk. These tools are provided free of charge without any warranty of accuracy, completeness, availability or fitness for a particular purpose; results are not professional advice. Statutory liability — in particular for intent, gross negligence and injury to life, body or health — remains unaffected.
Uso bajo su propio riesgo. Estas herramientas se ofrecen de forma gratuita y sin garantía de exactitud, integridad, disponibilidad o idoneidad para un fin determinado; los resultados no constituyen asesoramiento profesional. La responsabilidad legal — en particular por dolo, negligencia grave y daños a la vida, el cuerpo o la salud — no se ve afectada.
Utilisation à vos propres risques. Ces outils sont fournis gratuitement, sans garantie d’exactitude, d’exhaustivité, de disponibilité ou d’adaptation à un usage particulier ; les résultats ne constituent pas un conseil professionnel. La responsabilité légale — notamment en cas de dol, de négligence grave et d’atteinte à la vie, au corps ou à la santé — reste inchangée.