Regex: phone number (international)

How it works

E.164 shape: optional +, then 7–15 digits not starting with 0. Strip spaces, dashes, and parentheses before testing — normalizing first beats a regex that tries to accept every formatting style.

Honest caveats

Phone validation by regex is inherently shallow: real rules vary per country and change. For anything user-facing, use a library like libphonenumber; this pattern is the sanity check, not the validator.

More patterns