Travel adapter from Japan to Thailand — do you need one?

Q: What plug is used in Thailand?

Thailand uses Type A and Type B and Type C and Type O plugs at 230 V, 50 Hz.

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

No adapter needed

You will not need a plug adapter — Japan and Thailand share at least one common plug shape (Type A, Type B). 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.

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.

Japan (home)

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

Thailand (destination)

Type A Two flat parallel pins 100–127V Type B Two flat pins + round ground 100–127V Type C Two round pins (Europlug) 220–240V Type O Three round pins 220–240V

Electrical specifications in Thailand

Voltage

Japan 100 V

Thailand 230 V

Differs

Frequency

Japan 50/60 Hz

Thailand 50 Hz

Match

More about plugs in Thailand

In Thailand, the standard power plug is Type A and Type B and Type C and Type O. The country runs on 230 volts at 50 Hz. That means wall sockets in Thailand can be one of 4 different shapes — Type A, Type B, Type C, Type O, and your plug needs to physically match the socket to fit.

Full Thailand plug guide