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Phone Number Formatter

See common ways to write a US or Canadian phone number.

Format a number

Enter a 10-digit +1 North American number. We check its structure and area-code record, not the caller’s identity or whether the line is active.

Processed locally in your browser. Nothing you enter is sent to OfficialAreaCode or saved.

What is the E.164 format for a US or Canadian number?

E.164 expresses a North American number as +1 followed by ten digits, without spaces or punctuation. A readable international display can add spaces for clarity. Formatting a number does not prove it is assigned or reachable.

For a sample sequence when calling from another country, use the international dialing tool.