What is the regex pattern for international phone number?

The regex pattern for international phone number is: ^\+?[1-9]\d{1,14}$.

How does the international phone number regex work?

^: Start of string. \+?: Optional plus sign. [1-9]: First digit must be 1-9 (no leading zero). \d{1,14}: 1 to 14 more digits (total up to 15). $: End of string.

Regex for International Phone Number

Matches international phone numbers in E.164 format. Supports an optional + prefix and 2-15 digits.

Pattern

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

Pattern Breakdown

Token	Explanation
^	Start of string
\+?	Optional plus sign
[1-9]	First digit must be 1-9 (no leading zero)
\d{1,14}	1 to 14 more digits (total up to 15)
$	End of string

Test Examples

Input	Match?
+14155551234	Match
+442071234567	Match
61412345678	Match
+0123456	No match
abc	No match

Common Use Cases

International form validation
SMS API input validation
Phone number normalization

Variations

^\+\d{1,3}[-.\s]?\d{4,14}$

With required + and country code separator

Other Regex Patterns

Email Address US Phone Number URL IPv4 Address IPv6 Address Date (MM/DD/YYYY)Date (ISO 8601 YYYY-MM-DD)Time (HH:MM, 24-hour)Credit Card Number US Social Security Number US ZIP Code Hex Color Code

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