Vietnam Calling Code: +84
Complete guide to calling Vietnam — international dialing code, step-by-step instructions, and FAQ.
How to Call Vietnam from Abroad
📞 Step-by-Step Dialing Guide
- Dial your country's exit code (e.g. 011 from US, 00 from most countries, + from mobile)
- Dial +84 — the country calling code for Vietnam
- Dial the local phone number (area code + subscriber number)
About Vietnam Calling Code
Every country has a unique international dialing prefix; for Vietnam it is +84. The ITU assigns these codes under recommendation E.164. Dial +84 after your country's exit code, then the local subscriber number. Vietnam is in Asia.
Vietnam is known locally as Việt Nam — Hanoi is the capital. When saving an international contact, write the number in full international format with +84 so it works from any country.
The first digits of any international number are its E.164 country code. Vietnam uses +84, in South-Eastern Asia, so a call from anywhere else begins with an exit code, then +84, then the national number with its trunk prefix removed.
Where the +84 Calling Code Is Used
The country code +84 is assigned to Vietnam, located in South-Eastern Asia, with the capital Hanoi. This code is part of the international telephony numbering plan and is used for all calls made to Vietnam from outside the country.
A number displayed as +84 … is in international format: +84 replaces the domestic trunk prefix. From abroad, always drop any leading 0 of the area code and dial +84 + area code + subscriber number.
Calling codes starting with 8 are part of the ITU's regional numbering plan for the area around Vietnam, in South-Eastern Asia. When saving Vietnam numbers internationally, write +84 followed by the area code without its leading 0 — this format works from every country.
Vietnam Phone Number Formats
Numbers in Vietnam use the standard E.164 pattern — +84, then the area code, then the subscriber number. The same layout applies to landlines and mobile phones:
📱 Number Structure
- International format: +84 [area code] [subscriber number]
- From abroad: exit code + +84 + local number (drop the trunk prefix 0)
- Within Vietnam: dial the local number directly
Closed numbering plans give every national number the same length; open plans let it vary and rely on a trunk prefix for routing. For a caller outside Vietnam the distinction rarely matters, because the trunk 0 is dropped either way and +84 is dialed in its place. Vietnam numbers follows the published pattern +84 (XX) XXXXXXXX.
Time Zone in Vietnam
Vietnam runs on Asia/Ho_Chi_Minh, which is UTC+07:00 UTC. Schedule international calls accordingly — a convenient time for you may be very early or very late there.
Use the UTC offset (UTC+07:00) to plan calls to Vietnam. For most international callers, the practical rule is: schedule business-hour calls to Hanoi during the overlap between your working day and theirs.
Daylight saving time can shift Vietnam's clock by one hour in summer. For time-critical calls, confirm the current UTC offset rather than relying on the standard value.
Best Time to Call Vietnam
Business hours in Vietnam run roughly 09:00–18:00 local time. Because Vietnam sits at UTC+07:00, the window in which it is polite to call lands at a different hour for every caller. The table below converts Vietnam's working day into your own clock — and shows the hours to avoid so you do not wake anyone up.
| If you are in | Call Vietnam between | Avoid calling between |
|---|---|---|
| London | 02:00–11:00 | 16:00–00:00 |
| New York | 21:00–06:00 | 11:00–19:00 |
| Los Angeles | 18:00–03:00 | 08:00–16:00 |
| Sao Paulo | 23:00–08:00 | 13:00–21:00 |
| Dubai | 06:00–15:00 | 20:00–04:00 |
| Mumbai | 07:30–16:30 | 21:30–05:30 |
| Singapore | 10:00–19:00 | 00:00–08:00 |
| Sydney | 12:00–21:00 | 02:00–10:00 |
Times shown are standard time and ignore daylight saving, which shifts the clock by one hour in countries that observe it — around the clock change, add or subtract an hour from every figure above.
Emergency Numbers in Vietnam
If you need urgent help while in Vietnam, dial the local emergency numbers below. Note that these numbers are only for use inside Vietnam.
| Service | Number |
|---|---|
| Police | 113 |
| Fire | 114 |
| Ambulance | 115 |
Example: Calling Vietnam Numbers in Practice
Here is how a typical call to Vietnam works, depending on where you are calling from:
🌍 From the United States or Canada
- Dial the US/Canada exit code 011
- Dial the Vietnam country code +84
- Dial the local number (area code + subscriber number, without the trunk prefix 0)
Example: 011 +84 [area code] [number]
🌍 From the United Kingdom or Europe
- Dial the international access code 00 (or use the + symbol on mobile)
- Dial the Vietnam country code +84
- Dial the local number
Example: 00 +84 [area code] [number], or +84 [area code] [number] from any mobile phone
Leading zeros in domestic area codes are not dialed internationally. Write the number as +84 + area code (no leading 0) + subscriber number.
Calling Vietnam from Major Countries
International exit codes differ by country. These are the ones most often used to reach Vietnam (+84):
| Calling From | Exit Code | Full International Dialing |
|---|---|---|
| United States | 011 | 011 84 [local number] |
| United Kingdom | 00 | 00 84 [local number] |
| United Arab Emirates | 00 | 00 84 [local number] |
| Saudi Arabia | 00 | 00 84 [local number] |
| Australia | 0011 | 0011 84 [local number] |
| Japan | 010 | 010 84 [local number] |
| India | 00 | 00 84 [local number] |
| Singapore | 001 | 001 84 [local number] |
On mobile phones, the + symbol replaces the exit code entirely — just dial +84 followed by the local number.
Frequently Asked Questions
What is the calling code for Vietnam?
The international calling code for Vietnam is +84.
How do I call Vietnam from the United States?
Dial 011 (US exit code), then +84, then the local phone number.
How do I call Vietnam from the United Kingdom?
Dial 00 (UK exit code), then +84, then the local phone number.
Can I use the + symbol instead of the exit code?
Yes! On mobile phones you can dial +84 directly followed by the local number. The + symbol automatically replaces your country's exit code.
How do I call within Vietnam?
If you're already in Vietnam, simply dial the local number directly. You do not need to use the country code +84 for domestic calls.
What is the capital of Vietnam?
The capital of Vietnam is Hanoi. When calling the capital from abroad, dial +84 followed by the local area code (without the leading 0) and the number.
What are the emergency numbers in Vietnam?
Police: 113, Fire: 114, Ambulance: 115. These numbers are only valid inside Vietnam.
Is Vietnam a country?
Yes — Vietnam is a sovereign state, whose capital is Hanoi, and +84 is its international calling code.
Vietnam Mobile Phone Prefixes & Domestic Dialing
Mobile phone numbers in Vietnam typically use the following prefixes:
- 3x / 5x / 7x / 8x / 9x - mobile numbers are 10 digits
Vietnam City / Area Codes
Major cities in Vietnam and their local area codes (dial these after the country code +84 when calling from abroad):
| City | Area Code(s) |
|---|---|
| Hanoi | 24 |
| Ho Chi Minh City | 28 |
| Da Nang | 236 |
| Hai Phong | 225 |
Note: Drop any leading "0" when dialing from abroad. Example: Hanoi 24 becomes +84 24 + local number.
From the United States, a call to Hanoi is dialed as 011 +84 24 [local number].
Other Countries in Asia
Nearby countries and their calling codes:
Calling Vietnam from Kazakhstan or Malaysia works the same way: dial your local exit code first, then +84, then the local number. Within Asia, many callers simply use the + symbol on mobile to avoid exit-code differences.