Phone Number Formatter

Paste any phone number and get it in E.164, international, and national formats.

Enter a phone number

What is E.164 format?

E.164 is the international standard for phone number formatting. It starts with a "+" sign followed by the country code and subscriber number, with no spaces or dashes. Example: +14155550132

Most APIs (Twilio, Telnyx, Stripe) require phone numbers in E.164 format. If you're building an app that handles phone numbers, this is the format you should store them in.

When to use each format

E.164: Databases, APIs, SMS providers, any system that needs to dial the number
International: Display to users who may be in different countries
National: Display to users who are in the same country as the number
Digits only: When you need to strip all formatting for comparison or input fields