Check a phone number: detect the country from its calling code, verify the length against the national numbering rules and get it in E.164, international and national format — all in your browser.
The checker validates structure, country code and length. It cannot verify whether a number is assigned or reachable.
Paste or type a phone number into the field and this checker tells you what it is: it reads the country calling code, names the country, compares the number of digits with the national numbering rules for that country and prints the number as E.164 (the format used in databases and APIs), as an international number and in its national shape. National numbers are also supported: pick your country in the dropdown and a number such as 0170 1234567 is recognised and converted. The checker validates the structure and the length of a number — it cannot tell you whether the line exists, is currently assigned or reachable, and it does not send anything to a server. Everything is computed locally in your browser, with no signup and no upload.
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.