What is the regex for international phone (e.164)?

The regex pattern for international phone (e.164) is `^\+[1-9]\d{1,14}$`. This pattern validates validates e.164 international format — + followed by 2-15 digits.

How do I use this regex in JavaScript?

In JavaScript, create the regex with `const regex = /^\+[1-9]\d{1,14}$/;` and test with `regex.test(yourValue)`. It returns `true` if the value matches.

How do I use this regex in Python?

In Python, use `import re; re.match(r'^\+[1-9]\d{1,14}$', value)`. The raw string prefix (`r`) prevents Python from interpreting backslashes as escape characters.

Is this regex case-sensitive?

By default, yes. To make it case-insensitive, add the `i` flag in JavaScript (`/^\+[1-9]\d{1,14}$/i`) or use `re.IGNORECASE` in Python.

Regex for International Phone (E.164)

Regex Pattern

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

Validates E.164 international format — + followed by 2-15 digits

Quick Answer

The regex pattern for international phone (e.164) is `^\+[1-9]\d{1,14}$`. Validates E.164 international format — + followed by 2-15 digits. This works in JavaScript, Python, Ruby, PHP, Java, and most regex engines that support PCRE syntax.

Test Examples

Input	Result
+14155552671	✓ Matches
+442071838750	✓ Matches
+919876543210	✓ Matches
14155552671	✗ No match
+0123456789	✗ No match
+1 (415) 555-2671	✗ No match

Code Examples

javascript

const regex = /^\+[1-9]\d{1,14}$/;
const isValid = regex.test(value);

python

import re
pattern = r'^\+[1-9]\d{1,14}$'
if re.match(pattern, value):
    print("valid")

ruby

pattern = /^\+[1-9]\d{1,14}$/
if value =~ pattern
  puts "valid"
end

php

if (preg_match('/^\+[1-9]\d{1,14}$/', $value)) {
    echo "valid";
}

java

String pattern = "^\\+[1-9]\\d{1,14}$";
boolean isValid = value.matches(pattern);

Frequently Asked Questions

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