PlugVoltage

United States to Vietnam Power Adapter Guide

United States runs 120⁠V and Vietnam runs 220⁠V. Your plug shape is compatible; check each input label before connecting; a converter is not suitable for every appliance.

Caution: United States runs 120V and Vietnam runs 220V. A plug adapter changes the shape, not the voltage — a mismatched appliance must not be connected directly. High-power heating appliances should be replaced with a suitable local model; check both manufacturers before considering a converter.

United States (120⁠V) vs Vietnam (220⁠V) at a glance

SpecUnited StatesVietnam
Voltage120⁠V220⁠V
Frequency60⁠Hz50⁠Hz
Plug typesType A/BType A/C

Your United States devices in Vietnam

Hair Dryer No MacBook Pro Charger (USB-C Power Adapter) Check Rating CPAP Machine Check Label iPhone Charger Check Rating
Next step

What to do next

Check one device in VietnamUse your exact device label for Vietnam, not just the route average.Build a Vietnam trip packSave several devices, adapter needs, and converter/no-go warnings together.Adapter vs converterAvoid the common mistake: plug shape does not change voltage.

The adapter we recommend

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Get a United States→Vietnam adapter(opens in new tab)

Safety check: a plug adapter only changes plug shape. It does not convert voltage, so confirm your device label before buying.

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Best travel adapters for Vietnam →

FAQ

Do United States plugs work in Vietnam?

Often yes — the plug shapes are compatible. But check the voltage before plugging single-voltage devices in.

Will my United States hair dryer work in Vietnam?

For the typical United States single-voltage model: do not use it on this supply or buy a travel converter as a workaround. Choose a local-voltage model or a travel model explicitly rated for this supply. Vietnam is 220⁠V. Confirm frequency and any voltage selector before connecting.

Is the voltage different between United States and Vietnam?

United States is 120V and Vietnam is 220V. That difference matters for single-voltage devices.

Power outlets in Vietnam · Adapter vs converter

Guidance only — not professional electrical advice. Always confirm against your device's label before plugging in. Local wiring (especially in hotels and older buildings) can vary.