Travel adapter from Saint Kitts and Nevis to Japan — do you need one?

Q: What plug is used in Japan?

Japan uses Type A and Type B plugs at 100 V, 50/60 Hz.

Compare the plug shapes, voltage and frequency in Saint Kitts and Nevis and Japan, and find out which adapter you need before you travel.

No adapter needed

You will not need a plug adapter — Saint Kitts and Nevis and Japan share at least one common plug shape (Type A, Type B). Voltages differ (230 V at home vs 100 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.

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.

Saint Kitts and Nevis (home)

Type A Two flat parallel pins 100–127V Type B Two flat pins + round ground 100–127V Type G Three rectangular pins 220–240V

Japan (destination)

Type A Two flat parallel pins 100–127V Type B Two flat pins + round ground 100–127V

Electrical specifications in Japan

Voltage

Saint Kitts and Nevis 230 V

Japan 100 V

Differs

Frequency

Saint Kitts and Nevis 60 Hz

Japan 50/60 Hz

Match

More about plugs in Japan

In Japan, the standard power plug is Type A and Type B. The country runs on 100 volts at 50/60 Hz. That means wall sockets in Japan can be one of 2 different shapes — Type A, Type B, and your plug needs to physically match the socket to fit.

Full Japan plug guide