Verify phone number structure and country prefix codes according to international ITU standards. Cleans formatting, identifies country of origin, and converts local inputs into standard E.164 format.
Runs entirely in your browser
Check whether a telephone number is well-formed and convert it to the international standard format. This validator verifies a number’s structure and country prefix according to international (ITU) conventions, identifies the likely country of origin, cleans away spaces, dashes and brackets, and outputs the number in canonical E.164 form — the “+” and digits format that systems expect.
That is exactly what you need when storing numbers in a database, importing a contact list, or preparing numbers for an SMS or calling service, all of which are far more reliable with a consistent format. Catching a malformed number early prevents failed messages and calls later.
The validation runs in your browser, so the numbers you check are not uploaded. Note that it verifies format and structure rather than confirming that a number is currently active — a well-formed number can still be unassigned.
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