🇬🇧 ➔ 🇺🇸UK to USA Calling Guide

How to Call USA
From the UK

From United Kingdom to United States, the country code is +1. With StartACall you skip the codes and the downloads and dial United States from any browser tab.

Product facts

  • Outbound: No dedicated number required.
  • Inbound: Requires US/Canada digital number ($2.14 to $5/month).
  • No apps: Works in Chrome, Safari, Edge, Firefox.
Dialing Steps
Calling United StatesLine Active
🇺🇸

Step-by-Step: Calling USA from UK

Dialing internationally from the UK requires the standard exit code followed by the US country code.

1

UK Exit Code

Dial 00. This tells your UK provider you are making an international call.

2

US Country Code

Dial 1. This connects you to the North American Numbering Plan.

3

Area Code & No.

Dial the 3-digit area code + 7-digit number.Ex: 00-1-212-555-0199

Popular US Area Codes

Common destinations for UK callers.

CityStateCode
New York (NYC)New York212 / 646 / 917
Los AngelesCalifornia213 / 310 / 323
ChicagoIllinois312 / 773
HoustonTexas713 / 281
MiamiFlorida305 / 786
CityStateCode
San FranciscoCalifornia415 / 628
Washington DCDistrict of Columbia202
BostonMassachusetts617 / 857
Las VegasNevada702
AtlantaGeorgia404 / 678

Mind the Time Difference!

The UK is ahead of the USA. When it's 5:00 PM in London, it is:

New York (EST)
12:00 PM
Chicago (CST)
11:00 AM
Denver (MST)
10:00 AM
LA (PST)
9:00 AM

Frequently Asked Questions

Do I need to dial 00 before calling USA from UK?

Yes, 00 is the standard international access code for the UK and most of Europe. If you are calling from a mobile phone, you can often replace '00' with the '+' symbol (e.g., +1 212...).

How much does it cost to call USA from UK mobile?

Calling directly from networks like EE, O2, or Vodafone can cost between £1.50 to £2.00 per minute. Using StartACall allows you to bypass these fees and pay competitive rates.

Are calls to US toll-free numbers (800) free from UK?

Usually, no. Toll-free numbers (1-800, 1-888) are only free when dialed from within the US. Calling them from the UK typically incurs standard international calling rates.

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Calling United States from United Kingdom: what to know

United States answers on the country code +1, with the capital in Washington, D.C. and most business concentrated around New York, Los Angeles and Chicago. The working language for business is English, and local offices generally keep hours of Standard hours 9:00 to 17:00 in each local time zone. Federal offices skew earlier; West-Coast tech routinely runs to 19:00. Banks close 17:00 sharp.

From United Kingdom the outbound access code is 00, so a manual dial reads 00 then +1 then the local number. StartACall removes that step: the call goes through your browser, so there is nothing to install and no SIM card to swap when you travel between United Kingdom and United States.

Most mobiles in United States sit on operators such as Verizon Wireless, AT&T Mobility, T-Mobile US. Voicemail is widely used and read by transcription; leaving a brief callback request often gets faster response than re-dialing.

United States runs on UTC minus 5, and it shifts for daylight saving, so confirm the current difference before an early or late call.

How to dial United States from United Kingdom

  1. 1
    Dial the exit code 00

    00 is the international access code used when dialing out of United Kingdom. On a mobile you can press and hold 0 to enter the plus sign instead.

  2. 2
    Enter the country code +1

    +1 routes the call to United States.

  3. 3
    Add the local number

    Dial the destination number without its leading 0. For New York that means including the area code 212/646/332.

Best time to call United States

The destination is 5 hours behind you.

United Kingdom clock (UTC)
14:00 to 17:00
United States clock (UTC minus 5)
09:00 to 12:00

Place the call inside this window and both you and the person in United States are within normal working hours.

Rates to United States (+1)

Pay as you go, billed per minute with no connection surprises. A sample 10 minute call is shown for each line type.

Line typePer minute10 minute call
Landline$0.0460$0.46

Rates as of 2026-06-06, in US dollars, and subject to change. The exact rate is always confirmed in the dialer before you connect.

Frequently asked questions

How do I call United States from United Kingdom?+

Dial 00 then +1 followed by the local number without its leading 0. From a browser on StartACall you simply enter the number and press call, with no exit code to remember.

What is the country code for United States?+

The country code for United States is +1. New York uses the area code 212/646/332.

What is the best time to call United States?+

The destination is 5 hours behind you. Calling between 14:00 to 17:00 your time reaches United States during its working day (09:00 to 12:00 local time).

Do I need to install an app to call United States?+

No. StartACall runs in your browser on Chrome, Safari, Edge and Firefox, so you can place the call without downloading anything or buying a phone number for outbound calls.

Can I receive calls as well?+

Outbound calls need no number. To receive inbound calls you add a US or Canada digital number, billed monthly, and answer it in the same browser tab.

Last reviewed June 2026Reviewed by the StartACall calling teamDialing rules cross checked against ITU international dialing procedures
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