Phone Number Validator & Formatter — Free Phone Parser (E.164)

Phone Number Validator & Formatter — Free Phone Parser (E.164). Free phone number validator and formatter: check if a number is valid, detect country and line type, and convert to E.164, international, national or RFC3966 format — one number or in bulk.

Our free phone number validator tells you instantly whether a number is real and correctly formed, then rewrites it in every standard layout.

Pick a default country, type or paste a number with or without its prefix, and the phone number parser detects the country, the country calling code, the national number, any extension and the line type (mobile, fixed line, toll free, VoIP, premium rate and more).

It reports both "is valid" and "is possible", so you can quickly answer is this a valid phone number before saving it to a CRM, sending an SMS or calling a lead. Validation uses Google's libphonenumber metadata for more than 240 countries and regions.

As a phone number formatter it converts any input to the E.164 format (+14155552671, the international phone number format required by Twilio, WhatsApp Business, AWS SNS and most SMS APIs), a human-friendly international layout (+1 415 555 2671), the local national layout ((415) 555-2671) and RFC3966 tel: URIs for HTML links.

It even shows how to dial the number from another country, with the right exit code such as 00 or 011. Need to format phone numbers in bulk?

Paste a whole list — one per line — to validate and normalize every entry, see a valid/invalid count, copy the clean list or export a CSV with the country and line type of each number.

All parsing runs locally in your browser, so customer lists and personal contacts are never uploaded to a server.

Load an example number for any country, copy all details with one click, open a tel: or WhatsApp click-to-chat link, or share a link that restores the number and settings.

Related tools: turn a number into a scannable call link with the QR Code Generator, clean up addresses with the Email Normalizer, check bank account numbers with the IBAN Validator or tidy spreadsheets with the CSV Viewer.

Frequently asked questions

How do I check if a phone number is valid?

Pick the Default country code, then type or paste the number into Phone number. The table shows Is valid? and Is possible?, the detected country, calling code and line type such as Mobile or Fixed line. Numbers that start with a plus sign and country code do not depend on the default country.

What is the E.164 phone number format?

E.164 is the international standard layout: a plus sign, the country calling code and the national number with no spaces or punctuation, for example +14155552671. Many SMS and calling APIs require it, and the E.164 format row shows it ready to copy.

What is the difference between Is valid and Is possible?

Is possible only checks that the number has a plausible length for its country. Is valid goes further and checks it against the real numbering plan data from Google's libphonenumber, so a number can be possible but still not valid.

How do I format many phone numbers at once?

Paste one number per line into the Bulk phone number formatter, choose an Output format (E.164, International, National, RFC3966 or Digits only) and check the valid and invalid count. Copy valid numbers copies the clean list, and Copy as CSV adds the country and type of every line.

Why does it say Invalid phone number?

The field accepts only digits, spaces, plus signs, hyphens, brackets, dots and slashes, optionally followed by an extension such as x123 or ext. 123, so letters or other symbols trigger the error. A number without its country prefix is read using the Default country code, so check that setting too.

What does the How to dial from row show?

Choose a country in Dialing from and this row shows the digits to dial the number from that country, including its international exit code, for example 011 from the United States or 00 from the United Kingdom.

How to use this online tool

Phone Number Validator & Formatter — Free Phone Parser (E.164) is designed for fast browser workflows when you need to format, validate, convert, decode, encode, generate, or inspect data without opening a heavy desktop app. Start with the input field or visible options, review the result, then copy or download the output for the next step.

Private processing in your browser

Phone Number Validator & Formatter — Free Phone Parser (E.164) keeps the normal processing step local in your browser. That is useful for code snippets, tokens, documents, configuration values, text samples, and other material that should not be sent to a remote service unless you explicitly choose to share it.

When this tool is useful

Use Phone Number Validator & Formatter — Free Phone Parser (E.164) for repeatable developer tasks, technical documentation, QA checks, quick conversions, debugging, content cleanup, and internal team workflows. The page focuses on clear inputs, immediate feedback, and output that is easy to reuse in code, reports, tickets, emails, or notes.

Practical tips

Before copying the final result, check important details such as spacing, casing, filenames, encoding, token structure, line breaks, or output format. Small checks prevent mistakes when the result is reused in source code, API requests, documentation, spreadsheets, or shared files.