Thailand power adapters - what plugs are used in Thailand?

Thai power outlet

What adapter do I need for Thailand?

You will need to pack a Type B plug adapter [3] for Thailand if the plug you intend on using doesn't fit in a Thai power outlet.

The type of power adapter, power converter or charger that you'll need when visiting Thailand all depends on the voltage and type of device that you're attempting to use with a Thai power outlet. If you're unclear about which voltage your device can use then please read the section on how to tell the voltage of your device before going any further.

  • Expect regular power outages in Thailand, we recommend bringing a portable charger [4] if you want to recharge your mobile phone and other devices whilst travelling during a blackout.
  • If you are planning on travelling to Thailand from America then devices and appliances with US plugs will fit into a Thai power outlet without needing a plug adapter. However the voltage is 220 volts so please bring a power converter if your charger or appliance isn't dual voltage, also check that it will work with a 50hz power outlet.
  • If your device is 220 volts or is dual voltage and the plug fits in a Thai power outlet then it will work in Thailand.
  • If your device can run on 220 volts or is dual voltage but your plug won't fit in a Thai power outlet then you'll need a suitable plug adapter for Thailand such a Type B plug adapter [3]. Please be aware that a plug adapter for Thailand (or power adapter) will change the actual shape of the plug on your device to fit into a plug outlet found in Thailand, but but is unable to change the voltage from 220 volts to a different voltage.
  • If your device doesn't run on 220 volts and isn't dual voltage then you'll also need a power converter for Thailand to convert the voltage from 220 volts to the correct voltage for your device. You'll still need to bring along a suitable plug adapter for Thailand if the power converter doesn't use the correct Type B plug adapter.
  • If you simply want to power your USB devices such as cell phones or tablets then a USB travel power adapter is recommended and it will work with any voltage, however make sure that you choose one which has a Type B plug adapter otherwise you'll still need to pack a suitable plug adapter for Thailand.

Warning: If your device won't handle 220 volts you run the risk of a blown fuse, damage to your device or even an electrical fire hazard. Before attempting to use your device in Thailand read the instruction manual first to ensure safe operation.

Thailand power adapters

Power adapters for Thailand

If packing for a vacation to Thailand it's helpful to know in advance if you can use all your vital electronics such as cell phones and laptop computers when you arrive at your hotel. By not knowing which power socket is being used in Thailand you could end up either weighing your bags down with unnecessary spare adaptors or bring the wrong power adaptor, leaving you needing to buy or borrow a potentially expensive power adaptor when you get there. Complicated frequencies and standards can all be confusing when planning to travel to another country especially to the first time traveller. However this isn't as complex as it appears, with only a handful of different types of plug sockets used in the world this guide tells you exactly what you'll need in advance to charge your electronics in Thailand. This page contains links to step by step instructions showing you which power adapters you'll need to power your devices when visiting Thailand using their standard types B, A or C 220 volt 50Hz power outlets, Type B power outlets will be typically used by most Thai. Most power adapters are different depending on which area you taking a trip to so we recommend that you read the Wiki Connections travel power adapters list for a complete list of regions.

What is the best power adapter for Thailand?

The best power adapter for Thailand will be a Type B power adapter [3] which is suitable for powering any 220 volt device or appliance.

What is the best power adapter for Thailand?

What is a power adapter?

A power adapter is a compact and lightweight plastic adapter that permits a wall outlet in Thailand to accept a power plug from a different country.

Also known as: an electrical adapter, plug adapter, travel adapter, electrical adaptor, mains travel adapter or power adaptor [5].

Do I need a plug adapter in Thailand?

It depends on the country you are travelling from and the type of plug you are attempting to use.

Will I need a power adapter for Thailand if I'm from the US?

An American plug won't need a power adapter because it will fit into a Thai power outlet however the voltage is different so you need to use a power converter for Thailand if your charger or appliance isn't dual voltage.

What does a power adapter do?

A power adapter for a Thai power outlet enables visitors from another location to use their own electronic and electrical devices in Thailand simply by changing the shape of the plug to fit the power outlet.

Can a power adapter change the voltage in Thailand?

No, a power adapter only adapts the shape of a plug to fit into a 220 volt Thai power outlet and is unable to convert to a higher voltage. Should you wish to safely use a 100-120 volt device then you also need to bring a step down power converter for Thailand along with the correct power adapter.

Where can I buy a power adapter for Thailand?

Power adapters for sale in an airport

Where can I buy a power adapter for Thailand?

Power adapters are typically available in most major airports prior to departure, however the range of adapters might be limited to popular destinations. It is recommended to research the exact type of adapter required prior to shopping at the airport. Look in the travel accessories section of airport newsagents, electronic stores and pharmacists but expect to pay 50% more than regular prices. Airports will be your last chance to buy a power adapter before departure, always check the returns policy to ensure you can easily exchange or refund a faulty or unsuitable product in an airside shop.

On arrival power adapters can be found in local electrical high street shops and drug stores, but always check the build quality first as safety standards might be different in a foreign country as this is important when dealing with electrical goods. Keep in mind that a shopping trip searching for power adapters in an unknown location might be impractical, especially as this needs to happen quickly before batteries run out.

Hotel receptions could have a power adapter for sale, hire or as a complimentary extra for guests; however, availability is normally limited and a hotel might not have the exact type required for your country. If in doubt, call ahead to the hotel first and request a reservation as it is unlikely that an adapter will be found in your room on arrival.

It will more convenient and cheaper to buy the correct power adapter in advance of your trip. High street stores normally sell popular types of travel adapters to popular locations and for widest choice it is recommended to buy a power adapter online.

Electrical adapters for Thailand

Travel Power Strips

Travel power strip including plug adapters

Travel Power Strips

Benefits of a travel power strip

  • A travel power strip is able to charge more than one electical appliance at the same time from just one Thai power outlet, costing on average $30 USD.
  • Some models have voltage conversation for low wattage devices. Even if your device isn't dual voltage it will still work in Thailand when using just a travel power strip, making them a cheap lightweight substitute for a power converter.
  • Most power strips should also include multiple USB charging ports.
  • Offers surge protection. The voltage from power grids in certain areas could fluctuate, a power surge might damage electrical items. There are some power strips that include a built in surge protector which will prevent your electronics from being overpowered by unstable power grids.
  • When you return home the power strip could still work.
  • US and Canadian power strips include Type A, B, D, E/F, G, H, I, L and N plug adapters so should work in Thailand. (Note: UK power strips include type B, F, G and I plug adapters so you will need to use it with an additional plug adapter.)

Disadvantages of a travel power strip

  • The conversion on travel power strips won't support high wattage appliances such as clothes irons or hair straighteners.
  • Because of the size of a power strip it might be unsuitable for carrying in hand luggage.
  • Travel power strips might be considered excessive if you only have a small number of devices and appliances to charge.
Travel USB Wall Chargers

A USB charger with surge protection

Travel USB Wall Chargers

Benefits of a travel USB wall charger

  • Perfect when you only have to power USB devices.
  • Instead of packing multiple domestic USB power chargers travellers only need to pack one charger costing around $18 USD.
  • Supplied with swappable adapter heads making them versatile in a large number of different locations. Interchangeable adapter heads are typically small and lightweight which makes them easy to store in hand luggage.
  • Has surge protection.
  • The charger can still be functional domestically.
  • Interchangeable plugs fit into Types A/B, E/F, G and I power outlets so will work in Thailand.

Disadvantages of a travel USB wall charger

  • Restricted to USB ports so you won't be able to charge appliances, just USB powered ones.
Universal Travel Power Adapters

Some universal adapters include USB ports

Universal Travel Power Adapters

Benefits of a universal travel power adapter

  • Most universal travel adapters are designed to operate in over 150 different countries.
  • An all-in-one design which is both lightweight and small, around $15 USD.
  • There are some universal travel adapters that include USB charging ports.
  • Fairly easy to use.
  • Some models will have a surge protector built in which will protect any device from being overloaded by an unstable power grid.
  • The pins retract so won't catch against other items in baggage.
  • It will potentially still be of some use domestically as a USB charger.
  • Changes shape to Types A/B, E/F, G and I plugs so should work with a Thai power outlet.

Disadvantages of a universal travel power adapter

  • Can't be used with high powered electrical appliances such as clothes irons, hair straighteners, microwaves, kettles or hair dryers.
  • The shutters and internal moving parts might be fragile on some models which could make them prone to breaking whilst abroad.
  • Only charges one appliance.
  • A universal travel power adapter might not be totally universal, adapters might not work in certain countries with less common outlets.
  • They don't have a built in voltage converter meaning they're not suitable for electrical appliances which aren't 220 volts.
Power Plug Adapters

A small and lightweight type B plug adapter

Power Plug Adapters

Benefits of a power plug adapter

  • Compact and lightweight.
  • Cheapest option, prices around $7 USD.
  • Easy to use.
  • Bringing a Type B plug adapter [3] will work in Thailand.

Disadvantages of a power plug adapter

  • 1 power adapter per appliance - for every separate device you wish to use you'll also need to pack a separate adapter.
  • This plug adapter only alters the shape of the plug to fit in a Type B Thai power outlet and doesn't change the voltage; if your appliance doesn't work with a 220 volt outlet and isn't dual voltage then you will still need to bring a separate voltage converter.
  • Some hotel rooms in Thailand might only have one power outlet available, so you'll only be capable of charging one device at once.
  • If you wish to charge a USB device then you also still need to pack a USB charger.
  • Should you plan to visit more than just one country then you may need to pack multiple plug adapter types for other countries.
Plug Adapter Sets

Plug adapter sets

Plug Adapter Sets

Benefits of a plug adapter set

  • With prices between $15-$20 USD a power adapter set works out cheaper buying than purchasing multiple individual $7 power plug adapter types.
  • Covers every eventuality.
  • For anyone travelling to multiple locations a power plug adapter set is the most flexible option.
  • Set includes Type A, B, C, D, E/F, G, H, I, J, L, M and N plugs so should be compatible with a Thai power outlet.

Disadvantages of a plug adapter set

  • Involves planning; prior to any trip you'll have to choose which adapters to bring in advance, or alternatively pack every plug adapter in the set with you.
  • Means lots of individual adapters to pack.
  • All remaining plug adapters will be useless.
  • Not all power adapter types are typically included (and especially the less common adapters), so check that your set includes an adapter which works in Thailand.
  • Adapters only change the shape of the plug and don't alter the actual voltage.
Voltage Converters

A voltage converter

Voltage Converters

Benefits of a voltage converter

Disadvantages of a voltage converter

  • A voltage converter only changes the 220 volts from a Thai power outlet and won't change the shape of the plug to fit into a Thai power outlet, therefore you'll still need to bring the correct type of power adapter.
  • The normal size and weight of most models of voltage converters makes them impractical for carrying in hand luggage.
  • Redundant when you return to America.
  • Often better value and more practical to buy a dual voltage travel appliance than to purchase a more expensive power converter simply to bring your existing single voltage domestic appliance in an incompatible location.
  • Costly, on average $128 USD.
  • When you travel from the US go to Thailand then you will require one as the voltage in Thailand is 220 volts.

Comparison of electrical adapters for Thailand

Type B Power Plug Adapter
Power Plug Adapter
Universal Travel Power Adapter
Universal Travel Power Adapter
Travel USB Wall Charger
Travel USB Wall Charger
Travel Power Strip
Travel Power Strip
Plug Adapter Set
Plug Adapter Set
Voltage Converter
Voltage Converter
Can be used in Thailand Yes Yes Yes Yes Yes Yes
Types of plug included B A/B, E/F, G and I A/B, E/F, G and I A, B, D, E/F, G, H, I, L and N A, B, C, D, E/F, G, H, I, J, L, M and N B
Compatible number of countries (A) 45+ 150+ 150+ 200+ 230+ 230+
Fits in a Type B Thai power outlet Yes Yes Yes Yes Yes Yes
Useful when you return to America Yes Yes Yes
Typical combined number of USB ports and AC outlets 1 3 4 7 1 2
Powers USB devices Yes Yes Yes
Typical number of USB ports 0 2 4 4 0 0
Powers a 220 volt AC appliance in Thailand Yes Yes Yes Yes Yes
Typical number of AC outlets 1 1 0 3 (B) 2
Converts voltage (?) Yes (C) Yes
Surge protection Yes Yes Yes Yes
Typical dimensions 2.6 x 1.9 x 1.4 inches 3 x 2.1 x 2.1 inches 4.3 x 3.4 x 1.3 inches 6.6 x 3.6 x 1.5 inches 7.1 x 3.9 x 2.8 inches 11.7 x 8.1 x 6.7 inches
Typical weight 4.5 ounces 4 ounces 4.5 ounces 1.6 pounds 13 ounces 20 pounds
Typical number of items to carry (D) 1 1 5 8 12 2
Suitable for hand luggage Yes Yes Yes • (E) • (F)
Typical price $7 USD $15 USD $18 USD $30 USD $19 USD $128 USD
Buy Buy Buy Buy Buy Buy

Thailand power outlets and plug sockets

What plug sockets are used in Thailand?

Type A, B and C power outlets

What plug sockets are used in Thailand?

There are three different types of power supply used in Thailand, types B, A and C with the primary power outlets being type B:

  • Plug Type A - You can identify this plug socket by two thin adjacent slots next to each other for live and neutral pins.
  • Plug Type B - This power socket, technically called a type B power outlet, can be identified by the 2 slots where the plug socket blades go with a hole below for the longer earth pin.
  • Plug Type C - You can identify this power socket by the 2 round adjacent holes.

Do US plugs work in Thailand?

Maybe - an American plug will fit into a Thai power outlet without a plug adapter. However the voltage is different so use a power converter for Thailand if your device isn't dual voltage and check that your appliance is compatible with a 50hz power outlet.

What frequency is used in Thailand?

The frequency from a Thai power outlet is 50Hz.

Is the voltage in Thailand the same as the US?

The voltage in Thailand is 220 volts, whereas 120 volts is used in the US. If your American charger or appliance doesn't support dual voltage then you need a power converter for a Thai power outlet which allows a 120 volt US device to work in a 220 volt outlet.

Is a plug socket in Thailand the same as in the US?

An American plug will fit into outlets used in Thailand, both the voltage and frequency are different so if your appliance or charger isn't dual voltage use a power converter for Thailand and ensure that it works with 50hz.

How do I use a 110 volt appliance in Thailand?

A step down power converter will allow you to use a 110 volt appliance in Thailand.

Are there power outages in Thailand?

There are monthly power failures in parts of Thailand.

Are power outlets available in Thailand?

Access to electrical power in Thailand is excellent which spans the entire population.

Should I use a power bank in Thailand?

Portable charger for charging phones

Should I use a power bank in Thailand?

Due to the lack of a stable power grid in Thailand visitors are advised to pack backup charging solutions if they wish to continue using devices such as mobile phones dependably.

  • During a trip to Thailand increased use of mobile phones for storing itineraries, taking photographs, GPS, social networks and staying entertained will drain power before the end of the day. Beyond the simple missed photograph opportunities a flat mobile phone battery could potentially leave you stranded without sufficient power to make emergency calls or being able to use a satellite navigation app to return back to your hotel or accommodation.
  • Using a portable charger [4] alleviates those concerns as it means you can recharge your mobile phone without needing a wall charger, especially when visiting a country with frequent power outages.
  • A 10,000mAh power bank [4] will supply enough energy to cover over three full charging cycles while a 20,000mAh portable charger [14] should keep an average mobile phone powered for roughly seven days. A mAh value (milli ampere-hours) describes the capacity of the battery and gives an indication of the number of recharges the power bank can achieve, so a higher value will be better for travellers.
  • As long as your laptop supports USB-C charging then a portable charger for a laptop [15] marked with PD (power delivery) that supplies 20Wh or more can be used to recharge that laptop when travelling to Thailand. Be aware that some airlines won't let you bring power banks on an aircraft that supply 100 Wh of power or more and must not be kept in the hold so please check ahead with the airline first.
  • Consumer power banks aren't designed for high powered items that generate heat, but a rechargeable hair dryer [12] or gas hair straighteners [13] are designed for travelling to areas with frequent power cuts like Thailand.
How well do solar battery chargers work in Thailand?

Solar backpacks are ideal in hot weather

How well do solar battery chargers work in Thailand?

The weather in Thailand will be adequate enough to charge solar power bank [17] dependably, however it needs to be left in strong daylight in order to produce enough power for a single charge cycle. It might prove inconvenient to continually unpack a solar power bank then wait whilst it recharges in a sunny area.

  • The larger durable solar panels found on a solar backpack [16] will give the backpack the ability to generate more power within a faster period of time, making them ideal for the climate in Thailand.
  • Phones which are directly plugged into the USB port of a backpack will gradually recharge the battery during sunny periods in Thailand, however might be inconvenient to have a phone continuously connected in the bag during the day if it is to be used frequently. A solar powered bag is usually exposed to sunlight therefore can be charging a regular power bank throughout the day, unlike a handheld solar power bank which needs unpacking and facing the sunlight.
  • Although the climate in Thailand is suitable, a bag should ideally have a solar cell efficiency of 22% or greater, can generate at least 6 watts of energy and includes a 10,000mAH power bank or greater. Unlike regular solid solar panels, the durable and flexible panels used in solar powered bags have been built to survive scratches and bending. Solar bags are found in messenger, backpack and rucksack styles making them perfect for travel, work and domestic use.


  • International Electrotechnical Commission - World plugs by location (cited August 2014)
  • Wikipedia - Mains electricity by country (cited July 2014)
  • Index Mundi - Power outages in a typical month (cited May 2018, data collected between 2006 to 2017)
  • Index Mundi - Access to electricity (cited May 2018, latest data collected 2010)
  • WikiPedia - List of countries by average yearly temperature (cited May 2018, data averaged between 1961 to 1990)

Thailand chargers

What is a USB travel power charger?

A USB travel charger is a dual voltage charger with interchangeable plugs and multiple USB ports, suitable for charging multiple USB powered devices when travelling abroad.

What USB charger do I need for Thailand?

When you are travelling to more than one country and bringing along more than just one device the best international travel charger for Thailand is a multiple USB port adapter which includes compatible plugs like a 4 port USB travel charger [7]. There are three standards of power outlets that Thai use (types B, A and C) and bringing this will ensure that you are covered for both types A and C. Because these types of chargers come with interchangeable plugs and handle 100 volts to 240 volts it makes them ideal for over 100 countries in North America, Europe, Asia and Africa simply by switching the supplied heads. If your type of device can support Fast Charge (not all USB devices do) then you will benefit from quicker recharging times by using one of these types of power adapters, plus compatibility with more power hungry devices. Having a 4 port adapter will also allow you to power multiple devices simultaneously without needing to bring individual power chargers. Only bringing a single USB travel charger will also keep the weight down, making it perfect to fold up in hand baggage while travelling. Because of their space saving flexibility these types of adapters can be used at home so when you're not on holiday they can sit overnight charging multiple tablets and phones without using up an additional power outlet.

For those travelling on a regular basis we suggest buying an adaptable power adapter of this nature at an electronics retailer, the power adapter illustrated below is the 4 Port USB Wall Charger [7] which has been successfully tested for powering multiple USB devices in numerous foreign countries with perfect reliably.

What USB charger do I need for Thailand?

Why use a travel USB charger for Thailand?

  • Most travel USB chargers include multiple USB charger ports, this means that you now only need to bring one charger to charge multiple devices. Instead of bringing 4 separate power chargers you only need to pack a single 4 port USB wall charger to power up to 4 individual devices, thereby reducing the weight and size of your baggage.
  • Most travel USB chargers will include swappable plug heads for different countries. This is suitable when travelling across different countries which will probably use different standards to Thailand.
  • A good USB power charger is lightweight, compact and rugged - ideal for the rigors of travel instead of than risking bringing a domestic charger which could be impossible to replace or repair in Thailand.
  • USB chargers will accept both the 220 volts used in Thailand power outlets and different voltage standards in other countries.
  • There is a possibility that hotels in Thailand might only have a single wall outlet, by bringing a travel charger with multiple USB ports allows you to share out the single power supply with all your devices instead of having to wait to recharge each device one by one.
  • Because of their versatile nature a travel USB charger takes the worry out of travelling to any unknown country as they are guaranteed to work practically anywhere in the world.
  • Power outlets in airports can be scarce and demand for charging multiple cell phones and tablets from other passengers during departure can be high, so a USB charger with multiple ports and the capability to fast charge is ideal.
  • Some countries power grids are unstable, a good quality travel USB charger allows for unexpected fluctuations and will prevent damage to any devices attached to it. Trying to repair an overloaded smartphone or tablet in Thailand could prove to be problematic and expensive.
  • Premium USB travel chargers should also feature a power outlet strip to allow you to use low powered domestic appliances such as laptops, but please be aware these will be unsuitable for high powered domestic such as hair dryers or clothes irons. Read our section on using travel appliances with a Thai power outlet for helpful advice on the best power adapter to use with a Thai power outlet for high powered devices.
  • Certain tablets and cellphones might require more than the normal 500 mA supplied by a normal 5 volt USB power adapter to charge or provide fast charge. Ensure that the USB power adapter can support fast charging should some of your devices require extra power.
  • Travel USB power chargers can still be useful back at home by recharging multiple mobile phones and tablets every day using a single power outlet.

What is the best USB charger for Thailand?

The is the most compact option for travellers from any country wanting to recharge devices via USB, however for those also wanting to use their domestic plugs these power converters provide larger but more versatile solutions. All 3 power converters offer surge protection which is useful when visiting counties with unstable power grids to prevent damage to any connected appliances from voltage spikes. These travel converters come supplied with interchangeable type C, I and G plugs covering Europe, North America, Australia, United Kingdom, Japan, China and over 150 destinations:

  • BESTEK Portable International Travel Voltage Converter - The BESTEK travel adaptor has 4 USB charging ports with 3 AC power outlets and is the most popular compact power converter for travellers originating from North America going to Thailand using type B American plug sockets.
  • ORICO Traveling Outlet Surge Protector Power Strip - Similarly having 4 USB ports but only 2 AC power outlets the travel adapter from Orico is also aimed at travellers originating from North America using type B plugs and gives almost the same set of features as the BESTEK with just 1 less AC outlet for almost half price.
  • BESTEK International USB Travel Power Strip - This power strip has 2 AC outlets but offers 5 USB charging ports. This versatile power strip is compatible with both American plugs and popular plug types A, D,E/F, G, H, I, L and N making it ideal for a wide range of travellers from around the world visiting Thailand.

Power converters for Thailand

What does a power converter for a Thai power outlet do?

A power converter enables travellers to use a 100-120 volt electric appliance with a 220 volt Thai power outlet.

Also known as: electrical converter, electrical transformer, voltage converter, power transformer or voltage transformer.

What is the difference between a power converter and a plug adapter?

A lightweight, cheap and small power adapter (or plug adapter) changes the shape of the plug on your appliance to fit into a power outlet in Thailand, whereas a more expensive and heavier power converter [18] transforms a 220 volt Thai power outlet to work with a non-220 volt appliance.

Do I need a power converter for Thailand?

When visiting Thailand from another country check your device can be charged using a 220 volt power supply.

  • A step down power converter [10] is needed if you are travelling from a country that uses 100-120 volts and your appliance is incompatible with 220 volts. See our WikiConnections world power outlets guide to find out the voltage your country uses.
  • You won't need a power converter if you already use either a single voltage device that works with 220 volts or one that supports dual voltage.
  • Typically, devices designed to work with a lower voltage (such as 110 volts) and used with 220 volts run the risk of an electrical fire hazard, blowing a fuse or damage to your device.
  • You don't need a power converter if you wish to power a smaller electrical device such as a tablet or cell phone as these are typically designed for international use and dual voltage, but you should always always check the device for dual voltage support first.
  • If supplying power to high wattage appliances or generate heat (such as clothes irons and hair straighteners) then you will need to use a much larger higher wattage heavy duty power converter [19].
  • Investing a smaller robust dual voltage travel appliance could be more practical and cost effective than investing in a heavier high wattage power converter in order to use your existing domestic appliance.
  • Read these comprehensive guides on travelling with curling irons, clothes irons, flat irons and hairdryers with Thai power outlets , along with guides for some affordable dual voltage alternatives.

Do I need a power converter for Thailand if I'm visiting from America?

The voltage from a plug outlet in Thailand is different to a US supply, therefore use a step down power converter [10] if your appliance or charger isn't dual voltage.

What converter do I need for Thailand?

To use any 100, 110 or 120 volt appliance in Thailand you will need a step down power converter [10].

What is the difference between a power converter and a power transformer?

Voltage converter

What is the difference between a power converter and a power transformer?

Converters and transformers are both used to change one voltage to another, but this ambiguity can cause confusion as their purposes are different:

  • Power converters are designed for simple electrical appliances which typically generate heat or use motors such as clothes irons, shavers or hair dryers. Transformers are designed for more complex electronic items such as televisions or games consoles.
  • Buying a power converter is cheaper than buying a power transformer.
  • Power transformers are larger and heavier making them more suited for permanent residential use; for example an expat wishing to use an imported television would need to use a transformer for this purpose.
  • Power converters are more suitable for travellers wishing to bring domestic appliances abroad such as hair dryers or flat irons. However, it is more practical and cost effective to purchase a dual voltage appliance designed for travel rather than a heavier power converter.
  • Power converters are suitable for 2 pin ungrounded appliances, it could be harder to find a converter if you want to use a grounded 3 pin appliance.
  • Transformers can be used constantly however it is recommended that converters are used for no longer than a couple of hours at a time.
  • Shops may sell transformers under the name of converters, for the purposes this guide we will be referring to both converters and transformers as converters.

How to convert 220 volts to 110 volts

  1. Use a step down power converter [10] to allow you to use a 110 or 120 volt appliance with a 220 volt Thai power outlet.
  2. If the power converter doesn't include the correct shaped plug then it will also be necessary to plug in the power cord from the power converter into a power adapter for Thailand before plugging that into a Thai power outlet.
  3. Some power converters include the ability to perform both step up and step down voltage conversions, therefore it may be necessary to manually switch the converter to output the voltage to the 110-120 volt range.
  4. Plug your appliance into the converter and turn the power on, your 110-120 volt appliance can now be used with a 220 volt Thai power outlet.

What voltage is used in Thailand?

Thailand uses 220 volts in their power outlets.

What voltage is my appliance?

Dual voltage hair dryer

What voltage is my appliance?

One way to tell if a appliance is single or dual voltage is to check for a sticker on the charger, or on the unit itself, typically on the rear of the appliance or near to where the power cord plugs into. The location might depend on the make or model of your unit and should also be written on the box.

  • Single voltage devices might have a specific number - such as 240V.
  • Single voltage devices might also say a small voltage range (20 volts difference) with a dash to accomodate small voltage fluctuations - such as 220-240V.
  • Dual voltage devices will typically say a large voltage range separated with a slash - such as 100/240V.


How we compared products

Typical figures based on top 5 popular electrical adapters for each form-factor from different manufacturers with prices as of October 2018.

  • Power Plug Adapters - Ceptics Grounded Universal Plug Adapter, TESSAN Grounded Universal Travel Power Plug Adapter, Tmvel Universal International Power Adapter Plug, EnriQ Plug Adapter, Ckitze Travel Power Plug Adapter.
  • Universal Travel Power Adapters - BESTEK Universal Travel Adapter, NEWVANGA International Universal All in One Worldwide Travel Adapter, Bluegogo Universal All in One Worldwide Travel Adapter, HAOZI All-in-one International Power Adapter, UROPHYLLA Universal European Adapter Dual Fuses.
  • Trvel USB Wall Chargers - iKits 4-Port USB Wall/International Charger, LENCENT 4 Port USB Travel Adapter, PISEN USB Wall Charger, Anker 27W 4-Port USB Wall Charger PowerPort 4 Lite, USB Plug Travel Charger Adaptor, Turata 4 Port Universal World Wall Charger.
  • Travel Power Strips - BESTEK International USB Travel Power Strip, TESSAN 3 Outlet Surge Protector travel Power Strip, Portable Travel Adapter Power Strip Charging Station, GR-8 Power Compact & Slim Travel Charging Station, NTONPOWER Portable Charging Station.
  • Plug Adapter Sets - Ceptics GP-12PK International Travel Worldwide Grounded Universal Plug Adapter Set, Ceptics World Travel Adapter Set - 11 Pack, BESTEK Grounded Universal Plug Set, OREI 7 World Travel Adapter Plug Set, Ceptics Adapter Plug Set for World Wide International Travel Use.
  • Voltage Converters - Power Bright VC2000W Voltage Transformer Step Up/Down converter, LiteFuze LT-3000 3000 Watt Voltage Converter Transformer - Step Up/Down, SEYAS 1000W Auto Step Up & Step Down Voltage Transformer Converter, Rockstone Power 5000 Watt Heavy Duty Step Up/Down Voltage Transformer Converter, KRIEGER 1700 Watt Voltage Transformer Step up/down 120V / 230V AC outlet American European Converter.

Weight, dimensions, number of AC outlets, number of USB powers and prices were all based by calculating and rounding an average figure for each attribute where known.

Key to electrical adapter comparison

  1. Compatible number of countries based on data from the International Electrotechnical Commission World Plugs page (cited November 2018).
  2. Assuming only a single plug adapter from the plug adapter set will be used at any one time in a compatible location.
  3. Depending on if the power strip supports voltage conversion for low wattage items. All travel power strips tested do not convert voltage for high wattage appliances.
  4. Including the device itself, any supplied plug heads and power cords.
  5. Some travel power strips featuring less AC outlets may be small and lightweight enough to be suitable for hand luggage.
  6. Number of items if bringing an entire set of plug adapters for use in multiple locations to cover all eventualities (unless bringing only the necessary single plug adapter).

What type of adapter do you need for Thailand?

Which type of adapter you need for Thailand

The type of power converter or plug adapter that is suitable for Thailand will depend on various requirements. Prior to choosing the right adapter to use we recommend using the following checklist:

How many electrical items are you packing for Thailand?

How many devices are you bringing

How many electrical items are you packing for Thailand?

  • Count how many electrical items you intended on bringing with you to Thailand (for example mobile phones, tablets, laptops, eReaders, curling irons and hair dryers).
    • Remember to allow for more devices at a later date. Are you thinking about buying a new tablet computer next year for example?
    • There are an increasing amount of smaller rechargeable devices such as electric shavers that use USB charging as a power charging source. The next time you buy a new device it could use a USB adapter so please ensure your travel adapter has enough spare ports for these also.
  • Will you also be travelling with family who might need to recharge their devices?
Will you only be planning on charging USB devices in Thailand?

Are you only charging USB items

Will you only be planning on charging USB devices in Thailand?

What are the different types of devices do you want to use?

Make a list of items to bring

What are the different types of devices do you want to use?

  • There are 3 types of electrical items:
    • Low wattage electrical devices that plug into a power outlet - for example cameras and laptops.
    • High wattage electrical appliances which can be plugged into an electrical outlet - for example hair dryers or curling irons.
    • USB powered devices that can be plugged into a USB port - for example mobile phones and Kindles.
  • Should you only have to take just USB powered devices then you'll find that a travel USB charger is perfect because you will only need to bring one lightweight charger .
  • A travel power strip is perfect for powering and converting voltage for multiple low wattage devices of any voltage, however won't work with high wattage appliances that need voltage conversion.

Do your devices and appliances work with 220 volt power outlets?

Do you plan on visiting countries other than Thailand?

How many Thai power outlets will be available?

Are multiple wall outlets available

How many Thai power outlets will be available?

  • Your accommodation in Thailand might only have a single power outlet, this could be an issue when recharging batteries of multiple electronic devices such as cell phones, tablet computers and laptops overnight as you will only be able to recharge one device at a time every few hours.
  • Should you want to charge more than one device at the same time then we suggest bringing a travel power strip or travel USB wall charger which are capable of powering multiple USB ports or power outlets.

Do you intend to visit anywhere abroad in the future?

How much can you afford to pay?

  • Cheap power adapters start at $7 to power one device in Thailand (providing that it is dual voltage or is compatible with 220 volts), but paying roughly $20 will allow you to charge more than one device at once and you can use them in multiple different countries.

Would you like to use your charger when returning to America?

Are you only bringing hand luggage to Thailand?

Are you bringing just hand baggage

Are you only bringing hand luggage to Thailand?

Will it take you a long time to get to Thailand?

Arriving at an airport

Will it take you a long time to get to Thailand?

  • If you are embarking on an extended journey to get to Thailand consider an airport-suitable power charger that can be used with multiple outlet types, one that is light enough to pack in carry-on luggage and can quickly power tablets and phones.
  • Not all airports and airlines actually have power outlets for customers therefore consider packing a battery portable charger [4] for recharging on the go. After arriving in Thailand you might need to rely on a cellphone for making a call, sending texts, using mapping to find your hotel or reading an itinerary; please make sure that your phone will have enough charge stored.

What can I connect to a Thai power outlet

Travel appliances which can connect to a Thai power outlet

Beats Pill speakers which can connect to a Thai power outlet

Jabra Bluetooth speakers which are compatible with a Thai power outlet

Mobile phones that can connect to the Thai power outlet

Apple iPhones which can be connected to a Thai power outlet

Samsung Galaxy phones that work with a Thai power outlet

A list of Amazon Kindle tablets which work with a Thai power outlet

A list of Apple iPads which are compatible with a Thai power outlet


We endeavor to ensure all details on this page are correct and relevant to travelers visiting Thailand, if you wish to contribute any useful information or feedback please email For more comprehensive technical details visit the Wikipedia page on AC power plugs and sockets [20].


WikiConnections is not responsible for any injury or damage caused due to using any type of suggested product with any other electrical device or appliance in any location, full details are available on the disclaimer page. All functions and capabilities should be checked prior to purchasing or using any power adapter. Assumptions on if any power adapter, charger, converter or power strip works in any location is based on data from publicly available sources and if it fits the primary power outlet used in that country. WikiConnections has not taken into consideration other less common power outlets which might be found as these might only be used in certain areas or in the process of being phased out.

Where possible, WikiConnections only recommends the type of product as being suitable along with alternatives and does not make any endorsement for any specific brand or product. Always check with the manufacturer to ensure full compatibility prior to attempting to use any device. Always check the reputation of the manufacturer and product to ensure the quality and safety of any electrical device being used.

  1. - Thai Wikipedia web page.
  2. - International Electrotechnical Commission World Plugs
  3. Type B plug adapter - Allows appliances to connect to Type B power outlets without converting voltage.
  4. Portable charger - A power bank is a portable charger which can recharge USB powered devices such as mobile phones and tablets on the go.
  5. - power adaptor
  6. Travel power strip - A travel power strip includes surge protectors, AC power outlets, USB ports and swappable plug adapters for use in multiple countries.
  7. 4 Port USB Wall Charger - A universal USB charger capable of charging up to 4 USB devices with swappable international adapters.
  8. Universal travel power adapter - A typical universal travel power adapter can be used in over 150 different countries for use with appliances and USB devices.
  9. Plug adapter set - Plug adapter set containing a number of different power plug adapters for use in different countries.
  10. Step down power converter - A step down power converter allows a 100-120 volt appliance to be used in a 220-240 volt power outlet.
  11. - WikiPedia - Mains electricity by country
  12. Rechargeable hair dryer - Rechargeable battery powered blow dryer suitable for travelling.
  13. Gas hair straighteners - Cordless ceramic hair straighteners powered by gas cartridges.
  14. 20,000mAh portable charger - High capacity 20000mAh high-speed portable USB charger suitable for charging mobile phones and some tablets for several days.
  15. USB-C PD power bank - Power Delivery charger suitable for charging laptops with USB-C support.
  16. Solar backpack - A solar backpack will charge USB devices or an internal power bank when left in sunlight.
  17. Solar power bank - Portable power bank with solar cells which can recharge when placed in sunlight and power any USB powered device.
  18. Power converter - A step up step down power converter converts 110-120 volts up to 220-240 volts and 220-240 volts down to 110-120 Volts.
  19. Heavy duty power converter - A 5000 watt heavy duty step up and step down power converter used to convert voltages for domestic appliances, power tools, televisions, heating appliances and motors.
  20. - AC power plugs and sockets