Travel adapter from Japan to Hong Kong
Adapter Required
Yes — coming from Japan, you will need a travel adapter for Hong Kong. Japan uses Type A/Type B plugs, and Hong Kong uses Type G, so the pin shapes will not fit any wall socket. Voltages differ (100 V at home vs 230 V abroad), so check the label on each device. Most modern dual-voltage chargers handle the swing without a converter, but heating appliances usually do not.
Japan (home)
Type A
Two flat parallel pins
Type B
Two flat pins + round ground
Hong Kong (destination)
Electrical specs
Japan
100 V
50/60 Hz
⚡ Differs
Hong Kong
230 V
50 Hz
⚡ Voltage converter may be needed. Check your device label — most modern electronics (phones, laptops) support 100–240 V and only need a plug adapter. Hair dryers, kettles, and older appliances may need a step-up or step-down converter.
More about plugs in Hong Kong
In Hong Kong, the standard power plug is Type G. The country runs on 230 volts at 50 Hz. That means every wall socket in Hong Kong is the same shape — Type G, and your plug needs to physically match the socket to fit.