Regex for Phone Number (International)

Validates international phone numbers in E.164 format (up to 15 digits with optional + prefix).

Pattern

/^\+?[1-9]\d{1,14}$/

Live Tester

Enter a string to test

Examples

✓ +14155552671

✓ +442071838750

✓ 491711234567

✗ +0123456789

✗ 1

✗ +1234567890123456

Pattern Breakdown

^\+? — optional leading plus sign

[1-9] — first digit must be 1-9 (no leading zero)

\d{1,14}$ — followed by 1 to 14 more digits (total max 15)

Code Snippets

Javascript

const regex = /^\+?[1-9]\d{1,14}$/;
regex.test("+14155552671"); // true

Python

import re
pattern = r"^\+?[1-9]\d{1,14}$"
bool(re.match(pattern, "+14155552671"))  # True

Php

$pattern = '/^\+?[1-9]\d{1,14}$/';
preg_match($pattern, "+14155552671"); // 1

Related Patterns

Email Address /^[a-zA-Z0-9._%+-]+@[a-zA-Z0-9.-]+\.[a-zA-Z]{2,}$/ URL /^https?:\/\/(www\.)?[a-zA-Z0-9@:%._+~#=]{1,256}\.[a-zA-Z0-9()]{1,6}\b([a-zA-Z0-9()@:%_+.~#?&/=-]*)$/ Phone Number (US) /^$?[2-9]\d{2}$?[-.\s]?\d{3}[-.\s]?\d{4}$/ Phone Number (EU) /^\+?[1-9][0-9]{0,3}[\s.-]?$?[0-9]{1,5}$?[\s.-]?[0-9]{1,5}[\s.-]?[0-9]{1,5}$/ IPv4 Address /^((25[0-5]|2[0-4]\d|[01]?\d\d?)\.){3}(25[0-5]|2[0-4]\d|[01]?\d\d?)$/ IPv6 Address /^([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}$/

Frequently Asked Questions

What is the regex for Phone Number (International)?▾

The regex pattern for Phone Number (International) is /^\+?[1-9]\d{1,14}$/. Validates international phone numbers in E.164 format (up to 15 digits with optional + prefix).

How do I use the Phone Number (International) regex in JavaScript?▾

In JavaScript you create the pattern with a regex literal or the RegExp constructor and call .test() to check a string against it. A ready-to-copy example is shown in the Code Snippets section above, alongside Python and PHP versions.

What does the Phone Number (International) pattern match?▾

It matches strings like +14155552671; it rejects strings like +0123456789. See the Examples section above for the full list of matching and non-matching cases.