Numbers & Finance · In-Browser Regular Expression Lab

E.164 Phone Regex — International ITU-T Compliant Phone Format

Matches international standard phone numbers starting with a plus sign and 7 to 15 digits.

Pattern:

Regular Expression Pattern & Flags

Flags:

//none

Live Test String

Match Found

Load Sample:

Match Inspection & Details1 match

Match #1:+14155552671

Test Samples Verification Matrix

Expected Valid Samples (Should Match)

+14155552671 Pass

+442071838750 Pass

+971501234567 Pass

Expected Invalid Samples (Must Reject)

0014155552671 Rejected (Pass)

+0123456 Rejected (Pass)

14155552671 Rejected (Pass)

+1415555267199999 Rejected (Pass)

Code Implementation Generator

// JavaScript / TypeScript (ES6+)
const pattern = /^\+[1-9]\d{1,14}$/;
const text = "+14155552671";

const isMatch = pattern.test(text);
console.log("Is Match:", isMatch);

if (isMatch) {
  const matches = text.match(pattern);
  console.log("Matches:", matches);
}

Regular Expression Token Breakdown

Follows ITU-T E.164 standard: begins with +, country code (1-9), followed by up to 14 digits. Each component of the regular expression serves a distinct syntactical purpose as mapped below:

Token Pattern	Name / Component	Function & Rule
^\+	Leading Plus	Literal plus symbol indicating international prefix.
[1-9]	Country Code start	First digit cannot be zero.
\d{1,14}$	Subscriber Number	1 to 14 subsequent digits.

Frequently Asked Questions

What is E.164 standard?

E.164 is the international telephone numbering plan that ensures worldwide routability.

Browse All 40 Patterns

Numbers & Finance

US Phone Number Format

Flexible US phone number validator matching standard parentheses, hyphens, and spaces.

/^(?:\+?1\s*(?:[.-]\s*)?)?(?:\(\s*([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9])\s*\)|([2-9]1[02-9]|[2-9][02-8]1|[2-9][02-8][02-9]))\s*(?:[.-]\s*)?([2-9]1[02-9]|[2-9][02-9]1|[2-9][02-9]{2})\s*(?:[.-]\s*)?([0-9]{4})$/

Test regex

Numbers & Finance