UK Area Codes and Phone Number Information

How To Phone the USA

Dialling instructions for calling to and from anywhere in the United States of America, including how to call New York, Los Angeles, Chicago, Houston, Philadelphia, San Francisco, Boston and Washington.

Country code: +1

How to call the USA from the UK

To phone the USA dial 001
then the full national number minus any leading 1

If a number is displayed already including the +1 country code, just replace the '+' with the UK international access code of 00.


American phone numberDialled from UK as
(332) 555 012300 1 332 555 0123
1-332-555-012300 1 332 555 0123
+1 332 555 012300 1 332 555 0123

How to call the UK from the USA

To call a United Kingdom landline or mobile phone from the USA, dial 011 44, then the UK number without its leading zero.

For example, the UK number 01632 234567 should be dialled as 011 44 1632 234567.

These codes and instructions apply when dialling any part of the UK including England, Scotland, Wales and Northern Ireland, as well as Guernsey, Jersey and the Isle of Man.
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