🔍 Phone Number Regex Builder (30+ Countries)

Instantly generate validation regex for phone numbers across 30+ countries. Four variants (E.164 / International / Flexible / Mobile-only), multi-country OR combination, live tester and ready-to-paste snippets for JavaScript, PHP, Python, Ruby and Go. Perfect for form validation, log extraction and data cleansing.

100% Free No signup Browser-only 5 languages Dark mode

🔒 About Privacy

・All processing runs entirely in your browser (JavaScript)
・The phone numbers you enter are never sent to any server

Target countries (multi-select)

Regex variant

E.164 (strict) International (with separators) Flexible (intl + national) Mobile only

Options

Anchors (^...$) i (case-insensitive) m (multiline) g (global (all matches))

📝 Generated regex

/^.+$/g

🧪 Live tester

✅ 0 matched

❌ 0 unmatched

💻 Code snippets per language

📖 How to Use

1

Pick target countries

Pick a single country or several to combine into one OR pattern (perfect for international forms). 30+ countries supported.
2

Choose a variant

Pick from E.164 (strict + country-code), International (with separators), Flexible (intl + national) or Mobile-only.
3

Copy or test

Copy the regex with one click. Paste a list of numbers into the live tester to see matches and failures in real time.
4

Paste into your language

Ready-to-run snippets for JavaScript, PHP, Python, Ruby, Go and Java are generated automatically with proper escaping.

❓ Frequently Asked Questions

Why not use libphonenumber?

libphonenumber-js is around 70 KB which is overkill if you just want a small regex for form validation. We hand-write rules for 30+ common countries so you can copy-paste with zero dependencies. For full accuracy use libphonenumber.

What is the difference between International and E.164?

E.164 is the ITU-T standard (e.g. +819012345678) — pure digits, max 15, no spaces or punctuation. International format is the human-readable variant with spaces and hyphens (+81 90-1234-5678). Convention: store as E.164, display as International.

Can I combine multiple countries into one regex?

Yes. Tick multiple countries and the tool emits a single OR (|) pattern combining all of them — perfect for global form validation or extracting numbers from mixed logs.

Is the generated regex perfect?

It is a practical approximation aimed at ~80% validity. Numbering plans drift across carriers and years, so for bank-grade or telco-grade validation use libphonenumber or each national telecom regulator. For form inputs and log extraction these patterns are plenty.

🔗 Related Tools

・Phone Number Formatter — Convert to International / National / E.164 / tel: URI
・Regex Tester — Real-time JavaScript regex testing
・Email Validator — RFC 5322, disposable & role-account detection

🐛 Found a bug or issue with this tool?

Free to use, no signup. Even just the steps to reproduce are helpful. Reports go directly to the operator and help us fix issues.