Do You Need a Travel Adapter for Thailand?
Thailand uses Type A, Type B, Type C and Type O sockets at 230 V, 50 Hz. Phone and laptop chargers from the US, Europe, Canada and Japan plug straight in. From the UK and Australia you need a Type B or O adapter. Single-voltage hair dryers from the US, Canada and Japan also need a voltage converter.
Thailand's official standard is Type O (TIS 166-2549), a three-round-pin plug rated 16 A. In practice most sockets are hybrids that take Type A, B and C plugs as well as Type O. Schuko (Type F) plugs fit the hybrid sockets but are not earthed, and sale of appliances with E/F plugs has been banned.
Check your own plug
Verdict by where you are travelling from
Shop links go to the Amazon store for each origin. Some links on this site are affiliate links: if you buy through them we may earn a small commission at no extra cost to you.
| From | Phone, laptop or USB charger | Hair dryer or straightener | Buy |
|---|---|---|---|
| The US | Works | Converter | Step-down converter (amazon.com) |
| The UK | Adapter Type B/O | Adapter Type B/O | Type B adapter (amazon.co.uk) |
| Europe | Works | Adapter Type B/O | Type B adapter (amazon.de) |
| Australia | Adapter Type B/O | Adapter Type B/O | Type B adapter (amazon.com.au) |
| Canada | Works | Converter | Step-down converter (amazon.ca) |
| Japan | Works | Converter | Step-down converter (amazon.co.jp) |
Phone, laptop, USB and camera chargers are dual voltage, so they only need the right plug. Single-voltage hair dryers, straighteners and kettles need a converter unless rated for 220–240 V; electric shavers and CPAP machines vary by model. Read the INPUT line on the label. Adapter or converter?
More about sockets in Thailand
No other country or territory in Asia has exactly this mix of sockets (of 35 in the region). The national plug standard is TISS 166-2549.
Standard from Wikipedia, Mains electricity by country (CC BY-SA 4.0), retrieved 8 September 2026.
Frequently asked questions
What plug does Thailand use?
Thailand uses Type A, Type B, Type C and Type O sockets. Type A: two flat parallel pins. Type B: two flat parallel pins and a round earth pin. Type C: two round 4 mm pins, 19 mm apart. Type O: three round 4.8 mm pins, 19 mm apart. Type F sockets are also reported occasionally.
What is the voltage in Thailand?
Thailand runs on 230 V at 50 Hz.
Can I charge my iPhone or laptop in Thailand?
Yes. Phones, laptops and USB chargers are dual voltage (100–240 V), so 230 V is fine. Chargers from the US, Europe, Canada and Japan plug straight in. From the UK and Australia you need a Type B or O plug adapter.
Do I need a voltage converter for Thailand?
Only for single-voltage appliances made for 100–127 V countries, such as many hair dryers, straighteners and kettles. Anything marked INPUT 100–240 V works with a plug adapter alone.
Route guides
Other countries in Asia
Socket types: Type A Type B Type C Type O · Voltage by country
Data verified 8 September 2026 against the IEC World Plugs dataset, WorldStandards and Wikipedia, plus an official national source for Thailand. How this data was verified.