How to Call Vietnam from the US? 4 Easy Steps

  • Last Updated: 01 Apr 24
  • 6 min read
How to call Vietnam from US easily

It’s no longer a secret that Vietnam and the United States are among the most popular international calling destinations. 

Likewise, calling from us to Vietnam isn’t as complicated as you think. However, in 2022, Vietnam was proud of its 139.9 mobile cellular subscriptions per 100 inhabitants. This means that you can get more business opportunities. In this regard, finding the right method to call Vietnam is of the utmost importance.

In this blog, we will provide you with an easy step-by-step guide on how to call Vietnam from the US, learn about its area codes, time zones, and many others. 


  • To call Vietnam from the USA, dial the exit code followed by the country code, area code, and subscriber phone number.
  • Making an international call to Vietnam from the US can cost you between $6.9 to $9.2 cents per minute.
  • KrispCall is one of the most reliable and trustworthy virtual phone number providers.

How to call Vietnam from the US?

To call Vietnam from the USA, you should dial the exit code (011) and the country code (84), then enter the area code and the 7- to 8-digit phone number.

How to call Vietnam from US

Calling Vietnam from the USA, you have to follow a few simple steps:

Step 1: Dial 011, which is the international dialing code for the United States

Step 2: Dial 84 for a country code of Vietnam. 

Step 3: Dial the area code as per a specific city or region. 

Step 4: Finally, dial the remaining numbers.

For example: 011 – 84 – 24 – 1234567


  • 011- the exit code of USA
  • 84- country code
  • 24- area code of Hanoi(city)
  • 1234567- the subscriber number
✌️You May Also Like: How to Call UK From US

How to call Vietnam from US cell phone?

To call Vietnam from a US cell phone, dial the international access code for the US, which is 011. Then, add a country code for Vietnam, which is 84. Now, dial the mobile number prefix Lastly, dial 8-9 digits of mobile phone number.

Furthermore, let’s take a short look at the detailed steps for dialing Vietnam’s cell phone.

  • Dial the US exit code, which is 011.
  • Dial the country code for Vietnam, which is 84.
  • Dial mobile number prefix, depending on the mobile carrier in Vietnam.
  • For mobile numbers, add 8-9 digit numbers.

For example, Let’s say you want to call a mobile number in Hanoi starting with 90876543 (using Viettel with the prefix 90). The total dial string would be 011 84 1 90876543.

Important note: Before dialing, check with the person you’re calling in Vietnam to confirm if their number needs a prefix (1 or 9).

Popular Vietnam Area Codes

Before attempting to dial, you need to be clear about which area or city you’re going to call. By doing so, you can find the exact business or place you’re looking for. So here are some of Vietnam’s popular area codes.

City/RegionArea Code
Ho Chi Minh City8
Da Nang236
Hai Phong31
Can Tho29
Bien Hoa61
Vung Tau64
Nha Trang25
Da Lat63
Quy Nhon259
Phan Thiet252
Thai Nguyen280

How much does it cost to call Vietnam from USA?

The cost of calling Vietnam from the USA varies from different providers. However, the average cost to call Vietnam’s landline from the USA is approximately ¢6.9 cents per minute, and the cost to call Vietnam’s mobile number from the USA is ¢9.2 cents per minute

Moreover, you can also follow an alternative way, like using an international calling card to make international calls and avoid hefty charges.

🔍 Have a look at: How to Call India from the US

When to call Vietnam from the United States? 

There are many factors that come into play when determining the specific reason for when to call Vietnam from the United States. This may include 

  • Your schedule,
  • The recipient’s availability.

Moreover, you should try calling usually during the mid-morning to early afternoon in Vietnam time. However, it’s better to schedule business calls on weekdays rather than weekends

Time Zone Differences of Vietnam and USA

Before calling Vietnam from the United States, you should consider the time difference between each country. Since Vietnam is 14-15 hours ahead of PST in the US time zones, it is crucial to be mindful of the time gaps. However, here’s a general guideline that you can follow:

  • East Coast (EST): Ideally, you should schedule events between 7 pm and 10 pm EST, which is between 9 am and noon Vietnam Time).
  • Central Time (CST): Early evening calls between 6 pm and 9 pm CST connect you during Vietnam’s daytime (8 am to 11 am Vietnam Time).
  • West Coast (PST): If possible, call between 12 pm and 5 pm PST to reach Vietnam during their business hours (between 2 am and 6 am Vietnam Time).

Final Thoughts 

It is important to have the correct guidelines for calling Vietnam, which involves a few steps such as knowing the country’s exit code, dialing codes, and area code. Additionally, taking into account factors such as time zone differences and keeping a note of the calling cost can make the process more efficient.

However, unlike traditional phone lines, you have many alternative options, like a virtual number, VoIP calling apps, calling cards, and international phone plans. 

And if you’re searching for a reliable and trusted virtual number provider, we suggest you go with KrispCall. Not to mention, it offers many advanced features and functionalities of a provider that can improve your calling experience.

✅ Check Out: How to Call Malaysia from the USA


What is the calling code for Vietnam?

The calling code for Vietnam is +84.

How do I call Ho Chi Minh City, Vietnam from the US?

To call Ho Chi Minh City, Vietnam, from the US, you should dial the exit code number- country codearea code of Ho Chi Minh City, and subscriber numbers. The number would look like 011 84 8 1234567.

How do I call Hanoi, Vietnam from the US?

To call Hanoi, Vietnam, from the US, you should dial 011(exit code), 84 (Vietnam country code), 24 (Hanoi area code), and Hanoi local number.

Which country has the +84 code?

Vietnam has the +84 code.

Can I use my US cell phone in Vietnam?

Yes, you can use your US cell phones in Vietnam. But you should also make sure that your international roaming is enabled so that you can save hefty charges.

What is the cheapest way to call Vietnam from the USA?

The cheapest way to call Vietnam from the USA is to use VoIP service like KrispCall

Arun Chaudhary

Arun is SEO Analyst at KrispCall. He has written in extensively in the field of cloud telephony and call center solutions.

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