RegEx library
Email regex
Phone number regex
IP address regex
Date regex
URL regex
Numbers only regex (digits only)
UUID regex
Regex match words
ZIP code regex
GUID regex
Password regex
HTML regex (regex remove html tags)
SSN regex
XML regex
Mac address regex
Street address regex

Phone number regex

The regular expressions below can be used to validate if a string is a valid phone number format and to extract a phone number from a string. Please note that this validation can not tell if a phone number actually exists.

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JavaScript
Python
Java
C#
PHP

The basic international phone number validation

A simple regex to validate string against a valid international phone number format without delimiters and with an optional plus sign:

/^\+?[1-9][0-9]{7,14}$/
Test it!
/^\+?[1-9][0-9]{7,14}$/

True

False

Enter a text in the input above to see the result

Example code in Javascript

// Validate phone number
const validatePhoneNumberRegex = /^\+?[1-9][0-9]{7,14}$/;
validatePhoneNumberRegex.test('+12223334444'); // Returns true

// Extract phone number from a string
const extractPhoneRegex = /\+?[1-9][0-9]{7,14}/g;
'You can reach me out at +12223334444 and +56667778888'.match(extractPhoneRegex); // returns ['+12223334444', '+56667778888']

The more complex phone number validation

This regular expression will match phone numbers entered with delimiters (spaces, dots, brackets, etc.)

/^\+?\d{1,4}?[-.\s]?\(?\d{1,3}?\)?[-.\s]?\d{1,4}[-.\s]?\d{1,4}[-.\s]?\d{1,9}$/
Test it!
/^\+?\d{1,4}?[-.\s]?\(?\d{1,3}?\)?[-.\s]?\d{1,4}[-.\s]?\d{1,4}[-.\s]?\d{1,9}$/

True

False

Enter a text in the input above to see the result

Example code in Javascript

var regex = /^\+?\d{1,4}?[-.\s]?\(?\d{1,3}?\)?[-.\s]?\d{1,4}[-.\s]?\d{1,4}[-.\s]?\d{1,9}$/;
regex.test('+1 (615) 243-5172'); // returns true
Test it!

True

False

Enter a text in the input above to see the result

Extra information about validating phone number

While validation of phone numbers using regex can give a possibility to check the format of the phone number, it does not guarantee that the number exists.

There might be also an option to leave a phone number field without any validation since some users might have:

  • More complex phone numbers with extensions
  • The different phone numbers for calling them on a different time of day

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