Power Plugs & Voltage in Thailand
In Thailand, the standard voltage is 230V at 50Hz, and plug types A, B, C, O are used.
Your plugs (Type A, Type B) fit Thailand's sockets directly.
Thailand runs much higher than home. A single-voltage 120V appliance can be damaged — you'd need a voltage converter. Dual-voltage devices (100–240V) are still fine.
Check your charger Most phone, laptop and camera chargers are dual-voltage (look for “INPUT: 100–240V” on the label). Those only ever need a plug adapter, never a voltage converter. High-wattage items with heating elements (hair dryers, straighteners, kettles) are the usual exception.Thailand mains: 230V, 50 Hz.
Note Thailand's own Type O plus A, B and C are all found. Many sockets are hybrids accepting flat (A) and round (C) pins.
Plug types in Thailand
2 flat parallel pins (ungrounded, North America / Japan)
2 flat pins + a round grounding pin (North America)
2 round pins (Europlug, fits most of Europe)
3 round pins (Thai)
Many modern chargers, laptops, phones and cameras are dual-voltage: their label reads INPUT: 100–240V. Those work anywhere in the world with just a plug adapter — no voltage converter needed. Only single-voltage, high-wattage devices (hair dryers, travel kettles, straighteners) are a real concern in Thailand’s 230V supply. Always check the label on your own device.
How to check what you need for Thailand
- 01 Pick your home country in the checker above.
- 02 See instantly whether your plugs fit Thailand’s Types A, B, C & O sockets, and whether the 230V supply is a concern.
- 03 Read the label on each device — 100–240V means a plug adapter is all you need.
Frequently asked questions
What plug type is used in Thailand?
Thailand uses Types A, B, C & O plugs. Thailand's own Type O plus A, B and C are all found. Many sockets are hybrids accepting flat (A) and round (C) pins.
What voltage is Thailand?
The standard mains voltage in Thailand is 230V at 50Hz. Most modern chargers and laptops are dual-voltage (100–240V) and work fine; single-voltage appliances from a country with very different voltage may need a converter.
Do I need an adapter for Thailand from the US?
Thailand accepts US-style Type A/B plugs, so a plug adapter may not be needed — but check the voltage: the US is 120V and Thailand is 230V. Use the checker above for your exact home country.
Do I need an adapter for Thailand from the UK?
Yes. UK Type G plugs don't fit Thailand's Types A, B, C & O sockets, so you'll need a plug adapter. Voltage is 230V, the same as the UK, so no converter is needed.