How to call Vietnam from the United States
To call Vietnam from the United States, dial 011, then 84, then the number without its leading 0.
Dialed from the United States, a mobile number looks like 011 84 912 345 678 and a landline like 011 84 203 3456 789.
How to dial Vietnam from the United States
On a mobile phone you can type + instead of 011; from a landline, dial 011. In the QuikRing dialer you skip both: pick Vietnam and type the number.
The numbers show the format only.
How numbers in Vietnam are built
A number in Vietnam is the country code +84 followed by a national number of 9 or 10 digits. The trunk prefix, where there is one, is dropped after the code.
Written locally as 0912 345 678, an example mobile number in Vietnam is dialed as +84 912 345 678 from abroad.
Leave out the leading 0 when you dial it with the country code.
Why a call to Vietnam fails to connect
- Keeping the leading 0: after +84 it is one digit too many, and the network rejects the call.
- Leaving out 011 (or +): without it your carrier reads 84 as the start of a number in the United States, not as a country code.
- A wrong number of digits: a number in Vietnam has 9 or 10 digits after +84.
Best time to call
Vietnam is 11 h ahead of the United States. When it is 12:00 in the United States, it is 23:00 in Vietnam.
That gap moves between 11 h and 12 h during the year, because one of the two countries changes its clocks for daylight saving.
The United States changes its clocks for daylight saving, so its offset moves between UTC-5 and UTC-4 during the year.
The United States moves its clocks on March 8 and November 1.
Vietnam does not change its clocks for daylight saving, so the offset stays UTC+7 all year.
Where a country spans several time zones, this page uses its main one, so the real gap can differ by a few hours.
There's no clean overlap in standard working hours between the United States and Vietnam.
The weekend in Vietnam is Saturday and Sunday.
| Best time to call | United States time (New York time) | Vietnam time |
|---|---|---|
| Waking hours, 08:00–21:00 in both | 08:00–10:00 | 19:00–21:00 |
When it is 09:00 in the United States, it is 20:00 in Vietnam.
When it is 09:00 in Vietnam, it is 22:00 in the United States.
What it costs to call Vietnam
Right from your browser, no app or SIM card. Charged per started minute, with no connection fee.
Prices checked October 23, 2026.
What carriers in the United States charge
Carrier rates checked September 27, 2026, standard pay-per-use rates without add-on plans. See the full International Calling Cost Index for global rate benchmarks →
We recommend QuikRing for this call: the price per minute is shown before you dial, and there is no app or SIM to set up. It cannot place emergency calls; for those use a mobile or landline phone.
What a call costs
What a call to Vietnam (+84) costs with QuikRing.
How to call Vietnam with QuikRing
- 01Open QuikRing in your browser, sign up and add credit.
- 02Pick Vietnam in the dialer, or type +84 followed by the number.
- 03Check the price before you call: $0.23/min to a mobile, $0.23/min to a landline.
- 04Press Call. The phone in Vietnam rings like any other call, and nobody needs an app.
Frequently asked questions
How do I dial Vietnam from the United States?
To call Vietnam from the United States, dial 011, then 84, then the number without its leading 0. Dialed from the United States, a mobile number looks like 011 84 912 345 678 and a landline like 011 84 203 3456 789.
How much does it cost to call Vietnam from the United States?
With QuikRing a call to Vietnam costs $0.23/min to a mobile and $0.23/min to a landline, charged per started minute. Ten minutes cost $2.30 to a mobile and $2.30 to a landline. With QuikRing, calls from the United States to Vietnam start at $0.23/min. Standard pay-per-use rates without an add-on plan from a carrier in the United States: Verizon $2.49/min. We recommend QuikRing for this call: the price per minute is shown before you dial, and there is no app or SIM to set up. It cannot place emergency calls; for those use a mobile or landline phone.
What is the best time to call Vietnam from the United States?
Vietnam is 11 h ahead of the United States. When it is 12:00 in the United States, it is 23:00 in Vietnam. Best window to call: 08:00–10:00 your time (19:00–21:00 in Vietnam). That gap moves between 11 h and 12 h during the year, because one of the two countries changes its clocks for daylight saving.
Do I need to drop the leading 0 when dialing Vietnam?
Yes. Leave out the leading 0 after the country code: dial +84, then the rest of the number.
How many digits is a phone number in Vietnam?
A number in Vietnam has 9 or 10 digits after the country code +84, not counting a leading trunk digit.
Do landlines and mobiles in Vietnam cost the same to call?
A call to a landline in Vietnam costs $0.23/min and a call to a mobile costs $0.23/min. The dialer recognizes which one you typed and shows the price before you call.