International calling can seem confusing if you’re not familiar with country codes and dialing formats. Whether you’re calling friends, family, business partners, or customers in the United Kingdom, understanding the correct process helps you connect quickly and avoid unnecessary charges.
This guide explains everything you need to know about calling the UK from the US, including dialing codes, examples, costs, and modern alternatives such as eSIM-based calling solutions.
Why People Call the UK from the US
Millions of calls are made between the United States and the United Kingdom every year for:
- Business communications
- Family and personal connections
- Travel planning
- Customer support
- Educational purposes
- International partnerships
Knowing the proper dialing format ensures your call reaches the intended recipient without delays.
What Is the UK Country Code?
The international country code for the United Kingdom is:
+44
Every international call to England, Scotland, Wales, or Northern Ireland requires this country code.
How to Call the UK from the US
To call a UK number from the United States, use this format:
011 + 44 + Area Code (without the leading 0) + Local Number
Step-by-Step Breakdown
1. Dial the US Exit Code
The US exit code is:
011
This tells your carrier that you’re making an international call.
2. Enter the UK Country Code
The UK country code is:
44
3. Remove the Leading Zero
UK phone numbers usually begin with a zero when dialed domestically.
For international calls, remove that zero.
Example:
- UK Number: 020 7946 0958
- International Format: +44 20 7946 0958
4. Dial the Remaining Number
Complete the call by dialing the rest of the number.
Examples of Calling the UK from the US
Calling a London Landline
UK Number:
020 7946 0958
Dial:
011 44 20 7946 0958
Calling Manchester
UK Number:
0161 555 1234
Dial:
011 44 161 555 1234
Calling a UK Mobile Number
UK Mobile:
07700 900123
Dial:
011 44 7700 900123
How to Call the UK from a Mobile Phone
Most smartphones allow international dialing using the plus sign (+).
Instead of entering 011, dial:
+44
Example:
+44 20 7946 0958
This method is faster and works on most mobile networks worldwide.
Major UK Area Codes
| City | Area Code |
| London | 20 |
| Manchester | 161 |
| Birmingham | 121 |
| Liverpool | 151 |
| Edinburgh | 131 |
| Glasgow | 141 |
| Bristol | 117 |
| Leeds | 113 |
Remember to remove the leading zero before dialing internationally.
How Much Does It Cost to Call the UK from the US?
International calling rates vary depending on:
- Your mobile carrier
- Calling plan
- Time of day
- Whether you’re calling a landline or mobile
Traditional carriers often charge international rates that can become expensive for frequent callers.
Save Money with Internet-Based Calling
Instead of relying on expensive international calling plans, many travelers and businesses use:
- VoIP services
- Wi-Fi calling
- International calling apps
- eSIM data plans
These options can significantly reduce international communication costs while providing better call quality.
Use an eSIM for International Communication
If you travel frequently between the US and the UK, an eSIM can be a convenient solution.
Benefits include:
- Instant activation
- No physical SIM card required
- Affordable international data
- Easy switching between networks
- Better connectivity while traveling
Many travelers use eSIM services to stay connected and make calls through internet-based communication apps.
Common Mistakes to Avoid
Forgetting the UK Country Code
Always include 44 before the UK number.
Keeping the Leading Zero
Remove the first zero from UK numbers when calling internationally.
Using the Wrong Exit Code
When dialing from the US, use 011 or the + symbol on mobile devices.
Not Checking International Rates
Review your carrier’s international calling charges before making lengthy calls.
Frequently Asked Questions
What is the country code for the UK?
The UK country code is +44.
How do I call London from the US?
Dial:
011 + 44 + 20 + Local Number
Or:
+44 20 + Local Number
Can I use +44 instead of 011?
Yes. Most smartphones support the international plus sign (+).
Do I remove the first zero from UK numbers?
Yes. Always remove the leading zero when dialing internationally.
Can I call UK mobile numbers the same way?
Yes. Simply remove the initial zero and add +44.
Final Thoughts
Calling the UK from the US is simple once you understand the international dialing format. Remember to use the US exit code (011), the UK country code (+44), remove the leading zero from the UK number, and then dial the remaining digits.
For travelers, remote workers, and international businesses, modern solutions such as eSIM technology and internet-based calling services can provide a more affordable and flexible way to stay connected across borders.
