Phone Number Formatter
Normalize phone numbers to E.164, international, national, or RFC 3966 formats — single numbers or bulk lists for CRM imports and SMS campaigns. Powered by Google's libphonenumber metadata; everything runs in your browser.
E.164 is the canonical format for CRMs, SMS gateways (Twilio, Vonage), and auth providers — a leading +, country code, and subscriber digits with no spaces. Validation checks each country's numbering plan for length and prefix rules; it does not confirm the line is active.