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Phone parser and formatter

Parse, validate, and format phone numbers by country with E.164, international, national, and RFC3966 output.

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What is Phone parser and formatter

Written by Giorgos Kostas. Last reviewed:

Phone parser and formatter checks a phone number against country-specific numbering rules, then shows whether the number is valid, possible, and how it should be formatted.

It is useful when user-entered phone numbers need to be normalized before storing, comparing, importing, or passing to APIs that expect E.164 or RFC3966 values.

Why use it

  • Validate phone numbers against real country metadata.
  • Convert local numbers into E.164 for APIs and databases.
  • Inspect international, national, and RFC3966 formats side by side.
  • Check whether a number is mobile, fixed line, toll free, or unknown.
  • Keep parsing client-side for quick private checks.

Features

  • Country-aware phone parsing
  • Valid and possible checks
  • Line type detection
  • E.164, RFC3966, international, and national formats
  • Local-only Phone parser and processing keeps data in-browser

How to use Phone parser and formatter

  1. Choose a country. Select the default country for local phone numbers.
  2. Enter the phone number. Paste a local number or a full international number starting with +.
  3. Read the table. Review validity, possibility, type, country, and normalized output formats.

Example (before/after)

Input

Default country: Greece (+30)
Phone number: 6944582244

Parsed result

Country: GR
Country calling code: 30
Is valid? Yes
Is possible? Yes
Type: Mobile
International format: +30 694 458 2244
E.164 format: +306944582244
RFC3966 format: tel:+306944582244

Common errors

Wrong default country

Local numbers are interpreted using the selected country.

Fix: Choose the country that owns the local number, or paste the full +country-code version.

Possible but not valid

A number can have a plausible length but still fail real numbering-plan validation.

Fix: Check the selected country and confirm the subscriber number with the source.

FAQ

Does it support E.164 output?

Yes. The table includes the normalized +countrycode subscriber-number form used by many APIs.

Does it work with local numbers?

Yes. Choose the default country and enter the local number without the country prefix.

What does possible mean?

Possible means the length and shape can exist for that country. Valid means it matches known numbering-plan rules.

Is the phone number uploaded?

No. Parsing and formatting run in the browser.

Can I paste a number that already starts with +?

Yes. International numbers with a + prefix are parsed using their embedded country calling code.

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