🇺🇸 ➔ 🇬🇧USA to UK Calling Guide

Calling the UK
from USA?
Dial +44

Make seamless calls to uk from usa directly from your browser. Outbound calls don’t require a dedicated number. To receive inbound calls, secure a unique US/Canada digital number ($2.14–$5/month).

Product facts

  • Outbound: No dedicated number required.
  • Inbound: Requires US/Canada digital number ($2.14–$5/month).
  • No apps: Works in Chrome, Safari, Edge, Firefox.
Product facts
  • Outbound: call UK numbers from your browser (no number required)
  • Inbound: receive calls with a US/Canada digital number ($2.14–$5/month)
  • Security: end-to-end encryption
  • Dialing: +44 + area code (drop leading 0) + local number
How to Dial
Calling United KingdomReady
🇬🇧

How to Dial UK from the US

Follow this simple 3-step process to connect to any number in England, Scotland, Wales, or Northern Ireland.

1

US Exit Code

Dial 011.
This code allows you to dial out of the North American Numbering Plan.
(On mobile? Just hold '0' until '+' appears)

2

UK Code (+44)

Dial 44.
This routes your call to the United Kingdom's telephone network.

3

Area Code & Number

Dial the city code.Drop the leading '0'!Example: London is 020, dial 20.

Dialing Examples (USA to UK)

Calling a Landline (London)
Format: 011 + 44 + City Code (no 0) + Number
011 44 20 7123 4567
Calling a Mobile
Format: 011 + 44 + Mobile Prefix (no 0) + Number
011 44 7700 900123

Major UK City Codes

Common area codes for major British cities. Remember to omit the leading zero when dialing from abroad.

CityRegionDial Code
LondonGreater London20 (020)
ManchesterNorth West161 (0161)
BirminghamWest Midlands121 (0121)
GlasgowScotland141 (0141)
LiverpoolNorth West151 (0151)
CityRegionDial Code
LeedsYorkshire113 (0113)
EdinburghScotland131 (0131)
BristolSouth West117 (0117)
CardiffWales29 (029)
BelfastNorthern Ireland28 (028)
Mobile Networks

UK Mobile Prefixes

UK mobile numbers almost always start with 07. Drop the '0' when calling from the US.

07xxx
Standard Mobile (EE, O2, Vodafone, Three)
074xx
Mobile Virtual Operators
075xx
Newer Mobile Allocations
077xx
Standard Mobile

Cheap Calls to the UK
From Your Browser

Don't let international borders limit your communication. StartACall provides a seamless way to call the UK from the USA without the hassle of calling cards or expensive carrier plans.

  • Call London, Manchester & Glasgow instantly
  • Crystal clear HD voice quality
  • No hidden fees or connection charges
  • Works on mobile and desktop browsers

Low Rates

Avoid the $2.50/min charges from major US carriers.

Time Zone

The UK is generally 5-8 hours ahead of the USA.

Secure

Your calls are encrypted and private.

Fast

Connect in seconds. No registration to test.

Common Questions

What is the difference between +44 and 0044?

They are the same. '+' is the universal international prefix for mobile phones, while '00' is the standard exit code for many countries (but NOT the USA). From the USA, you dial 011 44, which is the same as +44.

Why does the London area code look like 0207 or 0208?

The official area code for London is just 020. The following digit (7, 8, 3, etc.) is actually part of the local phone number, though people often group them together out of habit. When dialing from the US, dial +44 20 followed by the rest of the number.

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

Calling UK mobiles is often more expensive than landlines with traditional carriers. However, StartACall offers very competitive rates for UK mobile numbers (O2, EE, Vodafone, Three) compared to AT&T or Verizon.

Do I need to dial 1 before the number?

No. '1' is the country code for the USA/Canada. When calling the UK, you use '44'. Do not dial 1 before 44.

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Country deep dive

From United States to United Kingdom

Practical reference covering the destination country's dial code, time zone, mobile carriers, city area codes, business etiquette, and any regulatory rules that affect inbound calls. The information below is specific to this route — different country pairs surface different operational details.

Calling United Kingdom (+44)

United Kingdom sits in GMT (UTC+0) / BST (UTC+1, last Sunday of March to last Sunday of October).. The country dial code is +44 and the official language for business is English. Local business hours run roughly 9:00–17:30 typical. Pub-and-lunch culture clusters meetings 10:00–12:30 and 14:00–16:30..

Major cities & area codes

  • London · 020
  • Manchester · 0161
  • Birmingham · 0121
  • Edinburgh · 0131

Mobile carriers in United Kingdom

  • O2 (Virgin Media O2) · 07800-07899 ranges typical
  • Vodafone UK · 07700-07799 ranges typical
  • Three UK · 07800-07899 ranges typical

What to know when calling United Kingdom

  • 0800/0808 are freephone from UK landlines and (since 2015) from UK mobiles too. 03 numbers cost the same as 01/02 calls — used by NHS, banks, government.
  • International calls to UK landlines should drop the leading 0 after +44; mobiles likewise (e.g. UK mobile 07700 900000 dials as +44 7700 900000).
  • 070 numbers look like UK mobiles but are 'personal numbers' that can cost the caller £0.50/minute or more — they're not real mobile lines.

Regulation & compliance (United Kingdom)

  • Ofcom CLI Guidance requires presented caller ID to be a number the called party can call back; non-conforming traffic gets blocked or labelled.
  • TPS (Telephone Preference Service) registration is enforced by ICO with fines up to £500k.

Calling from United States

From United States (Five time zones from Eastern (UTC−5) to Hawaii–Aleutian (UTC−10); most business activity sits in Eastern and Pacific.) the local business window is Standard hours 9:00–17:00 in each local time zone. Federal offices skew earlier; West-Coast tech routinely runs to 19:00. Banks close 17:00 sharp.. Most outbound callers reach a live answer most easily mid-morning local time, before lunch, and again in the late afternoon.

  • Voicemail is widely used and read by transcription; leaving a brief callback request often gets faster response than re-dialing.
  • Cold-call regulations vary by state — California, Florida and New York have stricter pre-recorded-message rules under their consumer protection acts.
Operational facts above are sourced from regulator publications and carrier disclosures; specific rates and routing are confirmed in the live dialer.
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