Phone Number Formats by Country

Parse, validate, and format international phone numbers using libphonenumber-js — a lightweight port of Google's libphonenumber. Supports E.164, International, National, and RFC3966 formats for 200+ countries.

200+Countries

4Format Types

ITU-TValidation

E.164Standard

Other Databases

Full International Dialing Directory

Browse every country calling code, local number format, and dialing guide on our dedicated phone reference site.

Visit countrycalling.codes

Live Phone Number Formatter

Type a phone number and select a country to see all output formats in real time.

🇺🇸United States +1

Phone number input (national or international format)

Enter in national format (e.g. 0712345678) or international (e.g. +44 7700 900123)

Formatted Output

Could not parse phone number — check format

Format Types Explained

E.164+14155552671

International standard used by APIs, databases, and SMS gateways. Always starts with + and country code. No spaces or dashes.

International+1 415 555 2671

Human-readable international format with spaces. Used in correspondence and UI display.

National(415) 555-2671

Local format without country code. Correct for domestic display within the country.

RFC3966tel:+14155552671

URI format for HTML href='tel:...' links and SIP protocol.

Implementation Guide

Install libphonenumber-js once, then use it anywhere in your Next.js app.

1. Install

npm install libphonenumber-js

2. Parse a phone number

import { parsePhoneNumber } from "libphonenumber-js";

const phone = parsePhoneNumber("+14155552671");
console.log(phone.country);          // "US"
console.log(phone.nationalNumber);   // "4155552671"
console.log(phone.isValid());        // true

3. Format output types

import { parsePhoneNumber } from "libphonenumber-js";

const phone = parsePhoneNumber("+14155552671");

phone.format("E.164");          // "+14155552671"
phone.format("INTERNATIONAL"); // "+1 415 555 2671"
phone.format("NATIONAL");      // "(415) 555-2671"
phone.format("RFC3966");        // "tel:+14155552671"

4. Validate

import { isValidPhoneNumber } from "libphonenumber-js";

isValidPhoneNumber("+14155552671");      // true
isValidPhoneNumber("+14155552671", "US"); // true
isValidPhoneNumber("0412345678", "AU");  // true
isValidPhoneNumber("123", "US");         // false

5. API Route (Next.js)

// app/api/validate-phone/route.ts
import { isValidPhoneNumber, parsePhoneNumber } from "libphonenumber-js";
import { NextResponse } from "next/server";

export async function POST(req: Request) {
  const { phone, country } = await req.json();

  if (!isValidPhoneNumber(phone, country)) {
    return NextResponse.json({ valid: false }, { status: 400 });
  }

  const parsed = parsePhoneNumber(phone, country);
  return NextResponse.json({
    valid: true,
    e164: parsed.format("E.164"),
    international: parsed.format("INTERNATIONAL"),
    national: parsed.format("NATIONAL"),
    country: parsed.country,
  });
}

6. React validation hook

// hooks/use-phone-validation.ts
"use client";
import { isValidPhoneNumber, parsePhoneNumber, CountryCode } from "libphonenumber-js";

export function usePhoneValidation(value: string, country: CountryCode) {
  const isValid = value.length > 3 && isValidPhoneNumber(value, country);
  const parsed = isValid ? parsePhoneNumber(value, country) : null;
  return {
    isValid,
    e164: parsed?.format("E.164") ?? null,
    international: parsed?.format("INTERNATIONAL") ?? null,
    national: parsed?.format("NATIONAL") ?? null,
  };
}

Implementation tips

—Store as E.164. Always store phone numbers in E.164 format in your database. It is the only unambiguous, globally unique representation.
—Use the min bundle. Import from libphonenumber-js/min to reduce bundle size by ~40 %.
—Display nationally. When showing a number to a user in their own country, use NATIONAL format. For cross-border, use INTERNATIONAL.
—Server-side validation. Never trust client-side validation alone. Validate E.164 format server-side before saving. The API route example above is the recommended pattern.

Country Dial Codes Directory

All ITU-T assigned country calling codes with example national numbers.

Flag	Country	ISO	Dial Code	Example Number
🇦🇫	Afghanistan	AF	+93	`0701234567`
🇦🇱	Albania	AL	+355	`0661234567`
🇩🇿	Algeria	DZ	+213	`0551234567`
🇦🇩	Andorra	AD	+376	`312345`
🇦🇴	Angola	AO	+244	`923123456`
🇦🇷	Argentina	AR	+54	`91123456789`
🇦🇲	Armenia	AM	+374	`077123456`
🇦🇺	Australia	AU	+61	`0412345678`
🇦🇹	Austria	AT	+43	`0664123456`
🇦🇿	Azerbaijan	AZ	+994	`0401234567`
🇧🇭	Bahrain	BH	+973	`36001234`
🇧🇩	Bangladesh	BD	+880	`01812345678`
🇧🇪	Belgium	BE	+32	`0470123456`
🇧🇯	Benin	BJ	+229	`90011234`
🇧🇹	Bhutan	BT	+975	`17123456`
🇧🇴	Bolivia	BO	+591	`71234567`
🇧🇦	Bosnia & Herzegovina	BA	+387	`061123456`
🇧🇼	Botswana	BW	+267	`71123456`
🇧🇷	Brazil	BR	+55	`11961234567`
🇧🇳	Brunei	BN	+673	`7123456`
🇧🇬	Bulgaria	BG	+359	`0881234567`
🇧🇫	Burkina Faso	BF	+226	`70123456`
🇲🇲	Myanmar	MM	+95	`09212345678`
🇧🇮	Burundi	BI	+257	`79561234`
🇰🇭	Cambodia	KH	+855	`091234567`
🇨🇲	Cameroon	CM	+237	`671234567`
🇨🇦	Canada	CA	+1	`5062345678`
🇨🇻	Cape Verde	CV	+238	`9911234`
🇨🇫	Central African Republic	CF	+236	`70012345`
🇹🇩	Chad	TD	+235	`63012345`
🇨🇱	Chile	CL	+56	`221234567`
🇨🇳	China	CN	+86	`13123456789`
🇨🇴	Colombia	CO	+57	`3211234567`
🇨🇩	Congo (DRC)	CD	+243	`0991234567`
🇨🇷	Costa Rica	CR	+506	`83123456`
🇭🇷	Croatia	HR	+385	`0921234567`
🇨🇺	Cuba	CU	+53	`51234567`
🇨🇾	Cyprus	CY	+357	`96123456`
🇨🇿	Czech Republic	CZ	+420	`601123456`
🇩🇰	Denmark	DK	+45	`20123456`