Plug Adapter for Thailand: Plug Type & Voltage
Quick answer: Thailand’s sockets are types A, B, C and F, at 220 V and 50 Hz. A US plug fits the type A and B sockets; the type C and F ones need an adapter. 220 V is about twice the US’s 120 V: a charger marked 100–240V needs only the adapter, but a device made for 120 V only must not be plugged in without a voltage converter.
Which plug adapter you need and whether you need a voltage converter: where you live, up to three places you are going, and what you are bringing.
United States → Italy
Bring a plug adapter: type C, F or LVoltage: Italy 230 V, against 120 V at home. Check each device’s label below.
- Italy
- Type C, F, Ladapter needed · 230 V · 50 Hz
- Phone charger and laptop charger: read the label. If it says “100–240V” (or has a voltage switch, set for where you are), it needs no converter, only the adapter. If it names one voltage, never plug it straight in: it needs a voltage converter.
- Hair dryer: read the label. If it says “100–240V” (or has a voltage switch, set for where you are), it needs no converter, only the adapter. If it names one voltage, never plug it straight in: it needs a converter rated above the watts on the label, or bring a dual-voltage travel model instead.
- Italy uses type C, F and L sockets; your type A and B plugs are not among them.
- More than one socket type is used there: an adapter for any of them works where that socket is on the wall. Many travel adapters take several; check which it lists.
- The frequency differs from home: chargers marked 50/60 Hz do not mind; clocks and some motors made for one frequency can run fast or slow on the other.
- Drawings are simplified. An adapter changes the shape of the plug, never the voltage: that is a converter’s job.
Plug types and voltage from Wikidata, frequency from the US International Trade Administration; checked 2026-09-25. Simplified drawings. Hotels and old buildings can differ: look at the socket.
The finder above opens on Thailand: add up to two more countries of your trip, and your devices, for the adapter and the converter you need.
Thailand’s plugs and voltage
Thailand’s sockets are types A, B, C and F, at 220 V and 50 Hz. A US plug fits the type A and B sockets; the type C and F ones need an adapter. 220 V is about twice the US’s 120 V: a charger marked 100–240V needs only the adapter, but a device made for 120 V only must not be plugged in without a voltage converter.
| Thailand | The US | |
|---|---|---|
| Plug types | A, B, C, F | A, B |
| Voltage | 220 V | 120 V |
| Frequency | 50 Hz | 60 Hz |
What your devices need
- Phones and laptops: read the label. If it says "100–240V" (or has a voltage switch, set for where you are), it needs no converter. If it names one voltage, never plug it straight in: it needs a voltage converter.
- Hair dryers and straighteners: read the label. If it says "100–240V" (or has a voltage switch, set for where you are), it needs no converter. If it names one voltage, never plug it straight in: it needs a converter rated above the watts on the label, or bring a dual-voltage travel model instead.
The frequency differs from home: chargers marked 50/60 Hz do not mind; clocks and some motors made for one frequency can run fast or slow on the other.
Plan it
FAQ
What plug type does Thailand use?
Types A, B, C and F, at 220 V and 50 Hz. A place may have only one of them, so an adapter that takes all of them, or a universal one, is the safe choice.
Do I need a plug adapter for Thailand?
Not for its type A and B sockets; its type C and F sockets need one, so a universal adapter is the safe choice.
Do I need a voltage converter for Thailand?
Only for a device made for 120 V alone, such as many hair dryers and straighteners: look for “100–240V” on the label, which needs no converter. Thailand runs at 220 V.
Will my phone charger work in Thailand?
Almost certainly: phone chargers are usually marked 100–240V. Its label decides; the plug fits as it is.
Where this comes from
The plug types and voltages are Wikidata’s (CC0), the same data as the Travel Adapter Finder; the frequency is the US International Trade Administration’s table. A plug is said to fit only where its own type is used: some sockets take other plugs too, but that depends on the socket, so this page does not promise it. An adapter changes the shape of the plug, never the voltage: that is a converter’s job.