Plug adapter for Thailand from Japan
What travellers from Japan need to charge and power their devices in Thailand: plugs, voltage and frequency, with the rest of the trip basics below.
Plug adapter
Not needed
Your Type A plugs fit Thailand's Types A and C sockets.
Voltage
Higher: 230 V
Japan 100 V → Thailand 230 V. Devices made for 110–120 V only need a step-down converter.
Frequency
Different
50 Hz / 60 Hz → 50 Hz. Chargers don't mind; mains-timed clocks and some motors may run fast or slow.
Your plug, their socket
In Thailand: Most sockets are combined sockets that accept Type A and Type C plugs; newer buildings use the Thai Type O socket. Supply is 230 V, so US devices that are not dual-voltage need a converter even though the plug fits.
Your devices in Thailand
Look for the “INPUT” line on the charger or label. A range such as 100–240V ~ 50/60Hz means the device adapts by itself and needs only a plug adapter.
| Device | Usually | In Thailand |
|---|---|---|
| Phone, tablet and laptop chargers | 100–240 V | Works as is |
| Camera and power-bank chargers, e-readers | 100–240 V | Works as is |
| Electric shavers, toothbrushes | often 100–240 V; check | Check the label: single-voltage ones need a converter |
| Hair dryers, straighteners, curling irons | single voltage | Will burn out on 230 V: buy a dual-voltage model or use the hotel's |
| Kettles, irons, travel cookers | single voltage, high power | Leave at home: converters for these are heavy and costly |
| Plug-in clocks, timers, some fans | 50 Hz / 60 Hz | May run fast or slow on 50 Hz |
A plug adapter does not change voltage. Plugging a 120 V-only appliance into 230 V through an adapter will destroy it within seconds and can start a fire.
The rest of the trip basics
- Time
- Thailand is 2 h behind of Japan right now (UTC+7 vs UTC+9).
- Money
- The Thai Baht (THB): 1 JPY = 0.2145 THB (ECB reference rates, 2026-10-30). Everyday prices are about 47% of Japan's.
- Driving
- On the left, as at home.
- Advisories
- US: Level 1 Exercise normal precautions. UK: FCDO advises against all but essential travel to parts of the country. Details
- Next holidays
- 5 Dec HM King Bhumibol Adulyadej the Great's Birthday · 5 Dec National Day · 5 Dec National Father's Day All 30
- Calling code
- +66