Plugs from Japan fit the wall outlets in Vietnam, but standard mains voltage differs significantly (100V vs 220V). Dual-voltage devices (laptops, phones, tablets) work normally. Single-voltage appliances (hair dryers, curling irons, kettles) require a voltage converter to prevent burnout.
Compare leading certified universal travel adapters equipped with multi-region prongs, GaN fast charging, and auto-resetting safety fuses.
Look at your device power brick or label:
Yes. Phone chargers are universal dual-voltage (100-240V). If the plug prongs do not match, a standard travel plug adapter is all you need.
Vietnam uses Type A, C. Look for 3-pin adapters if your appliance uses a grounded plug.