Japan power adapters - what plugs are used in Japan?

Japanese power outlet

What adapter do I need for Japan?

Use a Type B plug adapter for Japan if the plug you wish to use doesn't fit into a Japanese power outlet.

The type of plug adapter, converter or charger that's needed when visiting Japan all depends on the voltage and type of device that you're trying to use with a Japanese power outlet. If you're not sure which voltage your device can use then read the section below on how can you tell if you have a single voltage or dual voltage device before going any further.

  • If you're from the US travelling to Japan then all US devices and appliances should work without an adapter or a power converter. One recommendation however is to use a USB travel power adapter as it will allow you to recharge multiple devices using only one power charger.
  • If your device is 100 volts or is dual voltage and the plug fits in a Japanese power outlet then you can use it in Japan.
  • If your device can run on 100 volts or is dual voltage but the plug doesn't fit in a Japanese power outlet then you'll need to bring a suitable plug adapter for Japan such a Type B plug adapter. A plug adapter for Japan (or power adapter) only changes the shape of the plug on your device to fit into a plug outlet found in Japan, but doesn't change the voltage from 100 volts to use with another voltage.
  • If your device doesn't run on 100 volts and isn't dual voltage then you will also need a power converter for Japan to convert the voltage from 100 volts to the correct voltage on your device. You will still need to bring a suitable plug adapter for Japan if the power converter doesn't have the correct Type B plug adapter.
  • If you simply need to power USB devices such as a tablet or cellphone then a USB travel power adapter is recommended and it should work with any voltage, but ensure that you choose a USB travel adapter which has a Type B plug adapter otherwise you will still need to pack a suitable plug adapter for Japan[3]
  • Excessive use of a phone during a vacation will leave you with a flat battery quickly, we suggest packing a portable charger if you wish to keep your phone battery charged throughout the day whilst visiting an unknown location.

Warning: If your device won't handle 100 volts you run the potential risk of a blown fuse, damage to your device or even an electrical fire hazard. Prior to using your device in Japan please read the instruction manual first to ensure safe operation.

Japan power adapters

Power adapters for Japan

If packing for a trip to Japan it can be helpful to know if you can use any common electrical devices like cell phones or tablets when you're there. Without knowing which power socket is being used you may pack the wrong power charger, therefore leaving you needing to buy or borrow a suitable adaptor when you need to recharge. Various combinations of voltages and sockets can often be daunting when planning to visit a new country, especially to the first time traveller. This isn't as complicated as it appears, with only a handful of different types of sockets used throughout the world this guide tells you exactly what you'll need in advance to power your electronics in Japan. This page has links to step by step instructions which shows exactly how to supply power to your devices when staying in Japan using the Type B or A Japanese 100 volt 60Hz power outlets, you'll find a majority of Japanese typically use Type B power outlets. Power adapters are different from country to country so we suggest reading the Wikiconnections world power adapters guide where you'll find a full list showing destinations.

What is the best power adapter for Japan?

The best power adapter for Japan is a Type B plug adapter which is suitable for powering any 100 volt device or appliance. [3]

What is the best power adapter for Japan?
Japan

What is a power adapter?

Power adapters are compact and lightweight plastic adapters which allow a Japanese power outlet to accept a power plug from an appliance from a foreign country.

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

Do I need a power adapter for Japan?

If the type of Japanese power outlet is different to the power outlet in your home country then you will need a power adapter.

Japan

Will a power adapter change the voltage in Japan?

No - a power adapter only adapts the shape of a plug to fit into a 100 volt Japanese power outlet and is unable to convert the power to a higher voltage. If you need to safely use a 220-240 volt appliance you will also need to bring a more expensive step up power converter for Japan along with the right adapter.

Japan

What does a power adapter for a Japanese power outlet do?

A power adapter enables visitors from another country to use their electronic and electrical appliances in Japan simply by altering the shape of the power plug to fit the power socket.

Where to buy a power adapter in Japan

Arriving at an airport

Where to buy a power adapter in Japan

On arrival power adapters could 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.

Where to buy a power adapter for Japan

Power adapters for sale in an airport

Where to buy a power adapter for Japan

Power adapters are most likely be available in 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.

It will be 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 but for widest choice it is recommended to buy a power adapter online.

Electrical adapters for Japan

Travel Power Strips

Power strips have AC and USB sockets

Travel Power Strips

Benefits of a travel power strip

  • A travel power strip is able to power more than one electronic appliance or device at once using just one power outlet, costing under $40 USD (under £40 GBP / under C$40).
  • You will find some travel power strips will convert voltage for low wattage devices (for example laptops). So even if your appliance isn't dual voltage it should still function in Japan when using a travel power strip, making them a cheaper and lightweight alternative to a power converter.
  • Typical models should include a number of USB ports.
  • Offers surge protection. The voltage from power grids in certain countries might fluctuate, a sudden power surge can damage your electronics. Some models will have a surge protector, this will protect any electronics from being overpowered.
  • When you return home the power strip will still work as a USB charger and power strip.
  • US and Canadian power strips include Type A, B, D, E/F, G, H, I, L and N plug adapters so should work in Japan.

Disadvantages of a travel power strip

  • The power converter on a travel power strip won't convert higher wattage appliances such as curling irons and hair straighteners.
  • Due to their size power strips might be too heavy for packing in hand luggage.
  • A travel power strip might be considered excessive if you only bring a small number of devices and appliances that need powering. [6]
Travel USB Wall Chargers

A compact travel USB wall charger

Travel USB Wall Chargers

Benefits of a travel USB wall charger

  • Perfect if you only want to power devices which use USB, for example tablet computers, cell phones and Kindles.
  • Instead of bringing multiple domestic USB power chargers you only have to pack a single charger which costs on average between $10 to $15 USD (£10-£15 GBP / C$15-C$20).
  • Supplied with swappable heads making them useful in a large number of countries. The interchangeable adapter heads are usually small and lightweight making them easy to store.
  • Has a built in surge protector.
  • When you return home the charger will still be useful.
  • Interchangeable plugs will fit into Types A/B, E/F, G and I outlets so will work in Japan.

Disadvantages of a travel USB wall charger

  • Restricted to USB outputs so you can't power any appliances, just USB devices. [7]
Universal Travel Power Adapters

A universal travel power adapter

Universal Travel Power Adapters

Benefits of a universal travel power adapter

  • Useful for travelling to multiple countries. Typical models will operate in around 150 countries.
  • An all in one design. Both lightweight and small, under $20 USD (under £20 GBP / under C$30).
  • Some universal travel adapters include multiple charging ports for USB devices built in.
  • Straightforward operation.
  • There are some universal travel adapters that have a surge protector which will prevent any electronics from being overpowered by an unstable power grid in some countries.
  • The pins retract so don't catch against other items in baggage.
  • When you return home the power strip should still be functional as a USB charger.
  • Changes shape to Types A/B, E/F, G and I plugs so should work with a Japanese power outlet.

Disadvantages of a universal travel power adapter

  • Cannot be used with any high power appliances such as clothes irons, microwaves, kettles, curling irons or hair dryers.
  • The internal moving parts might be fragile on some models making them prone to breaking.
  • Only provide power to one plug.
  • Not completely universal - some models might not work in some countries with less popular power outlet types.
  • Missing a voltage converter means it won't be suitable for appliances which aren't 100 volts. [8]
Power Plug Adapters

A small and lightweight type B plug adapter

Power Plug Adapters

Benefits of a power plug adapter

  • Small and light.
  • Affordable, with prices between $5 to $10 USD (£5-£10 GBP / C$5-C$10).
  • Easy to operate.
  • Using a Type B plug adapter will be ideal for Japan.

Disadvantages of a power plug adapter

  • Only one power adapter per device - for each individual device or appliance you'll also need to pack a separate adapter.
  • Only alters the actual shape of the plug to fit in a Type B Japanese power outlet and not the actual voltage - if your appliance doesn't support a 100 volt power outlet and isn't dual voltage then you will still need to pack a voltage converter.
  • Hotel rooms might only have a single wall outlet available, so you will only be capable of charging one appliance at a time.
  • You'll also need to pack a separate USB charger as well if you need to power a USB device.
  • Should you plan on travelling to more than one country then you may need to bring along multiple plug adapter types for other countries. [3]
Plug Adapter Sets

Cost effective plug adapter set

Plug Adapter Sets

Benefits of a plug adapter set

  • As prices are roughly between $15 to $20 USD (£5-£10 GBP / C$20-C$25) a set will typically work out cheaper than purchasing multiple individual plug adapters for multiple countries costing almost $10 USD (almost £10 GBP / almost C$10) each.
  • Ensures you are covered for all countries.
  • The most flexible option if you are travelling to different locations.
  • Set includes Type A, B, C, D, E/F, G, H, I, J, L, M and N plugs so will be suitable with a Japanese power outlet.

Disadvantages of a plug adapter set

  • Will involve some planning; you'll have to decide which plug adapters to bring, or alternatively pack each plug adapter type along.
  • Means lots of individual items to bring along.
  • With just one functioning plug adapter working in Japan the remaining plug adapters will be redundant and using up space.
  • Not all power adapter types are typically included with the set (especially the less common adapters) - so ensure that your set has an adapter that is compatible in Japan.
  • Only alters the shape of the plug to allow it to fit in a Japanese power outlet but doesn't alter the voltage. [9]
Voltage Converters

A voltage converter with surge protection

Voltage Converters

Benefits of a voltage converter

Disadvantages of a voltage converter

  • It will only change the 100 volts from a Japanese power outlet and not the actual shape of the plug to fit in a Japanese power outlet, therefore you'll still be required to pack the correct type of power adapter for Japan.
  • Costly, between $110 to $120 USD (£80-£90 GBP / C$120-C$130).
  • The normal size and weight of voltage converters makes them unsuitable for packing in hand baggage.
  • An expensive voltage converter isn't of any use when get back from Japan.
  • Usually better value and more practical to purchase a dual voltage travel appliance than to purchase a much more expensive power converter just in order to use your existing domestic appliance in Japan.

Comparison of electrical adapters for Japan

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 Japan 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 Japanese power outlet Yes Yes Yes Yes Yes Yes
Useful when you return home 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 100 volt AC appliance in Japan 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)
Estimated price under $10 USD (under £10 GBP / under C$10) between $15 to $20 USD (£15-£20 GBP / C$25-C$30) between $10 to $15 USD (£10-£15 GBP / C$15-C$20) between $35 to $40 USD (£35-£40 GBP / C$35-C$40) between $15 to $20 USD (£5-£10 GBP / C$20-C$25) almost $100 USD (almost £110 GBP / over C$60)
Buy Buy Buy Buy Buy Buy

Japan power outlets and plug sockets

What plug sockets are used in Japan?

Type A and B power outlets

What plug sockets are used in Japan?

There are two different types of power outlets used in Japan, these are type B and A with the primary power outlets being type B:

  • Plug Type A - The wall socket, also known as a type A power outlet, can be recognised by 2 slots adjacent to each other.
  • Plug Type B - This power socket, also known as a type B power outlet, can be recognised by 2 thin slots next to each other where the live and neutral blades go with a semicircle hole below for the slightly long grounded pin. [3]
Japan

How do I use a 220 volt appliance in Japan?

A step up power converter will allow you to use a 220, 230 or 240 volt appliance in a Japanese power outlet.

Japan

What frequency is used in a Japanese power outlet?

The frequency used in a Japanese power outlet is 60Hz. [11]

Japan
https://en.wikipedia.org/wiki/Mains_electricity_by_country

How reliable is electric in Japan?

Although power outages are unpredictable, the power supply in Japan is classed as dependable and there is no history of frequent power blackouts.

Japan

Are electrical outlets common in Japan?

Japan has 100% access to electrical power throughout the country.

Japan
Should I bring a power bank to Japan?

USB power bank for charging mobile phones

Should I bring a power bank to Japan?

Whilst electrical blackouts in Japan aren't common and electricity is available throughout the country, visitors are still recommended to bring a power bank to recharge cell phones and other devices.

  • During a trip increased reliance on smart phones for taking photographs, storing calendars, social network sharing, GPS and playing games can syphon off power more excessively than normal. A flat cell phone battery can potentially leave you in an unknown location without adequate power to make emergency calls or being able to use a GPS app to get directions to your hotel or accommodation. Bringing a portable charger alleviates those concerns as it allows you to keep your cell phone powered on the move.
  • A 10,000mAh portable charger can supply enough energy to power around three full charge cycles whilst a 20,000mAh power bank should keep an average smart phone powered for roughly 7 days. A mAh value shows the capacity of the battery and gives an indication of the number of charges the portable charger can do.
  • If you need to charge your laptop in Japan and your laptop uses a USB-C charging port then use a portable charger for a laptop marked with PD (power delivery) which supplies at least 20 Wh. Be aware that some airlines won't allow you take power banks on an aircraft with more than 100Wh of power and must not be kept in the hold so please check ahead with the airline.
  • Consumer power banks aren't strong enough for use with high powered items that generate heat, although a rechargeable hair dryer or gas hair straighteners can be used for travelling.    [4] [12] [13] [14] [15] [16]
Japan
Do solar battery chargers work in Japan?

A solar backpack recharging in the sun

Do solar battery chargers work in Japan?

The climate in Japan could be suitable for a solar power bank, however is likely to take time to recharge. The reduced surface area of the cells means a solar power bank will need to be left in powerful daylight for an extended period of time in order to provide enough energy for a single charge cycle, and this might prove inconvenient to continually pack and unpack a solar power bank then wait for it to recharge between cloud cover.

  • The bigger cells found on a solar backpack will give the bag the ability to create more electricity within a faster period of time, and might still generate a smaller charge during overcast weather.
  • A phone which has been plugged directly into the USB port of a solar backpack will gradually top up the battery during sunny spells in Japan, but this might prove inconvenient to have the phone continually connected in the bag should it be used frequently. Unlike a small solar power bank which requires unpacking facing the sunlight, a solar bag is continually exposed to daylight therefore can be topping up a power bank throughout the day.
  • A bag that is suitable for Japan should have a solar cell efficiency of 22% or greater, be able to generate at least 6 watts of power and includes a compatible power bank of 10,000mAH or stronger.
  • Solar bags are found in rucksack, laptop messenger and backpack styles making them perfect for work, domestic and travel use.
  • The durable and flexible solar cells used in solar powered bags are made to survive bending and scratching, unlike normal rigid solar panels.  [4] [17] [18]
Japan

Sources

  • 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)

Japan 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 Japan?

If you are travelling with more than one device the best international travel charger for Japan to buy is a multiple USB adapter which includes swappable plugs such as a 4 port USB travel charger. Japanese use two different standards of wall outlets (types B and A) and using a travel adapter like this ensures that you are covered for type A.

Because these types of chargers are supplied with interchangeable plugs and can handle 100 volts - 240 volts it makes them ideal for multiple countries around the world just by switching the included heads. If your device can support Fast Charge (note not all USB devices can) then you will benefit from quicker recharging times with one of these types of travel adapters along with compatibility with certain power demanding devices like tablets. This will allow you to power more than one device simultaneously without needing to buy multiple power adapters. Only needing a single USB travel charger will keep the size and weight down, making it perfect to store in hand baggage and on hand for recharging your devices at the airport or on your flight. Because of their versatility these types of chargers can be used when you return home not just abroad so when you're not on holiday they can be used under your bedside table charging multiple smartphones, tablets and speakers without using up an additional wall outlet.

For those travelling to Japan we recommend buying this type of versatile power adapter online. The multipurpose power adapter illustrated here is the 4 Port USB Wall Charger which has been successfully tested for powering multiple USB devices in numerous countries around the world. [7]

What USB charger do I need for Japan?
Japan

Why use a travel USB charger for Japan?

  • Most travel USB chargers include 4 or more USB charger ports, meaning you now only need to bring a single charger to charge multiple devices. Instead of bringing 4 individual power chargers you only need to pack a single 4 port USB wall charger to power up to 4 devices, thereby cutting down on the weight and size of your baggage.
  • Most travel USB power chargers should include interchangeable plug heads for various regions making them ideal when visiting different countries across Asia which will probably use different outlets to Japan.
  • A good power charger is lightweight, compact and rugged - perfect for rigors of travel instead of than risking bringing a domestic charger which could be hard to repair or replace in Japan.
  • USB chargers will accept both the 100 volt power outlets in Japan along with different voltage standards in other countries.
  • It is possible that hotel bedrooms or accommodation in Japan only have a single power outlet, by using a travel charger with multiple USB ports means you can share the single power supply with all your devices rather than waiting to charge one device at a time.
  • Because of their versatile nature they take the uncertainty out of visiting an unknown country as they are guaranteed to work practically anywhere around the world.
  • Power outlets found in airports are often sparse and demand for charging multiple cell phones and tablets from other passengers before a flight can be high, therefore a USB charger with multiple ports and the capability to fast charge is ideal.
  • Sometimes the power grid in a country can be unstable, a quality travel charger allows for unexpected spikes and prevents damage to any devices attached to it. Trying to repair an overloaded mobile phone or tablet in Japan might prove to be problematic and costly.
  • Larger USB chargers will also feature a power outlet strip to use multiple low powered domestic appliances such as laptops, however these are unsuitable for high powered appliances such as hair dryers or clothes irons. Read our guide on using travel appliances in Japan for useful advice on the best power adapter for a Japanese power outlet for high wattage devices.
  • Certain cellphones and tablets could pull more than the usual 500 milliamps supplied by a standard 5 volt USB adapter to charge or provide fast charge. More expensive USB travel chargers will support fast charging should some of your devices need additional power.
  • On back at home travel USB power chargers can also be used by recharging multiple mobile phones and tablets on an overnight basis using one power outlet. [7]

What is the best USB charger for Japan?

The is the most compact option for travellers from around the world who only have USB devices, but for visitors also wishing to use their domestic plugs these power adapters provide larger but more versatile solutions. All three power converters offer surge protection which can be crucial when visiting regions with unreliable or unstable power grids. These power converters are supplied with interchangeable type C, I and G plugs covering Continental Europe, America, Australia, United Kingdom, Japan, China and over 150 destinations:

  • BESTEK Portable International Travel Voltage Converter - The BESTEK travel converter has 4 USB charging ports with 3 AC power outlets and is the best selling compact power converter for travellers originating from North America visiting Japan using type B American plug sockets.
  • ORICO Traveling Outlet Surge Protector Power Strip - Also having 4 USB ports but only 2 AC power outlets the travel adapter from Orico is also aimed at travellers originating from the US using type B plugs. This is a much cheaper alternative to the BESTEK with just one less AC outlet at almost half the price.
  • BESTEK International USB Travel Power Strip - This power strip has just 2 AC outlets but offers a more flexible 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 majority of travellers from around the world visiting Japan.

Power converters for Japan

What is a power converter?

Power converters allow you to use a 220-240 volt electrical device with a 100 volt Japanese 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 power adapter for Japan?

A heavy and bulky power converter will convert a 100 volt Japanese power outlet to work with a non-100 volt appliance, but a more lightweight and cheaper power adapter (or plug adapter) will change the shape of the plug on your appliance to fit into a power outlet found in Japan. [19]

Do I need a power converter for Japan?

If you are visiting Japan from another country check that the device can be used with a 100 volt power supply.

  • You need a step up power converter if you are travelling from a country that uses 220-240 volts and your appliance doesn't support 100 volts. See our WikiConnections world power outlets page to discover the voltage your country uses.
  • You don't need a power converter if you are already using either a 100 volt appliance or one that supports dual voltage.
  • Devices which originated from another country which use a higher voltage such as 220 volts and used in a 100 volt power outlet either take longer to charge or simply won't turn on. If your device charges slowly or does not power up when you are visiting Japan from another region please check that it can be used with a 100 volt Japanese power outlet otherwise you will need to bring a step up power converter.
  • You don't need a power converter if you need to recharge a smaller electrical device such as a cell phone as these are normally designed for international use and dual voltage, however you should always check the device for dual voltage support first.
  • If powering high wattage appliances or generate heat (for example curling irons or hair dryers) then you will need to use a much larger higher wattage heavy duty power converter which allows it to be used with a 100 volt Japanese power outlet.
  • Purchasing a smaller robust dual voltage travel appliance might be more practical and cost effective than investing in a much heavier power converter in order to use your existing domestic appliance in Japan.
  • For more information read our comprehensive guides on using clothes irons, curling irons, hair straighteners and hairdryers with a Japanese power outlet which includes advice for affordable dual voltage alternatives.  [10] [20]
Japan

What converter do I need for Japan?

In order to use any 220, 230 or 240 volt appliance with a 100 volt Japanese power outlet you need to use a step up power converter[10]

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

Voltage converter

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

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 100 volts to 220 volts

  1. Use a step up power converter to allow you to use 220, 230 and 240 volt appliances with a 100 volt Japanese 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 Japan before plugging that into a Japanese 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 from 220-240v.
  4. Plug your appliance into the converter and turn the power on, your 220-240 volt appliance can now be used with a 100 volt Japanese power outlet. [10]

What voltage does Japan use?

Japan uses 100 volts in their standard power outlets. [2]

Japan
http://www.iec.ch/worldplugs/
How can I tell if I have a dual voltage device?

Dual voltage hair dryer

How can I tell if I have a dual voltage device?

The best method to tell if a device is dual voltage or single voltage is to look for either a sticker or numbers printed on the existing charger or on the appliance itself, typically near to where the power cord goes. The location might depend on the make or model of your device but should also state in the instruction manual or on the box.

  • Single voltage devices might have a specific number - such as 120V.
  • Single voltage devices might also have a small voltage range (around 20 volts) with a dash to accomodate small voltage fluctuations - such as 220-240V.
  • Dual voltage devices will say a larger range separated with a slash - such as 110/240V.

Substantiations

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.
  • Travel 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 and number of USB powers 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 Japan?

Which type of plug adapter do I need for Japan?

The type of power converter which is best to use in Japan will depend on various requirements, so before deciding which adapter to use we suggest using this checklist:

How many devices will you be taking to Japan?

How many devices are you packing

How many devices will you be taking to Japan?

  • Add up how many items you intended on bringing with you to Japan (such as tablets, mobile phones, eReaders, hair dryers or curling irons).
    • Remember to take into account that you might own more devices at a later date. Do you intend on buying a new mobile phone computer soon?
    • There is a growing number of smaller rechargeable devices such as electric shavers which use USB charging for their power charging source. The next time you have to replace a device it could need a USB adapter so please check that your travel adapter has enough spare ports to power these also.
  • Are you bringing children along who might need to recharge their devices as well?
Are you only charging USB devices in Japan?

Will you only need USB items

Are you only charging USB devices in Japan?

What different types of devices do you need to charge in Japan?

Make a list of items to bring

What different types of devices do you need to charge in Japan?

  • There are three types of electrical devices:
    • Low wattage electronic devices which plug into a power outlet - for example laptops and cameras.
    • High wattage appliances which plug into a power outlet - for example hair dryers and curling irons.
    • USB powered devices which charge with a USB port - for example mobile phones and iPads.
  • When you only want to take just USB powered devices to Japan then a simple travel USB charger is perfect as you'll only have to bring one charger and your existing charging cables and leave your domestic chargers at home.
  • Travel power strips are designed for powering and converting voltage for many low wattage devices (such as cameras), but unsuitable for high wattage appliances that need voltage conversion.

Do your appliances and devices work with a 100 volt power outlet?

Do you intend on visiting countries other than Japan?

How many Japanese power outlets are available?

Are multiple outlets available

How many Japanese power outlets are available?

  • Hotels in Japan might only offer one power outlet. This will be an inconvenience when charging up the batteries of more than one device overnight because you will only be able to charge one device at a time.
  • To recharge multiple devices at the same time we suggest using a travel USB wall charger or a travel power strip which can power multiple USB ports or power outlets. [6]

Are you planning to visit anywhere else abroad in the future?

What is your budget?

  • A basic power adapter starts from around under $10 USD (under £10 GBP / under C$10) which powers one device from a Japanese power outlet (providing that works with 100 volts or is dual voltage), but investing in anywhere between $15 to $20 USD (£15-£20 GBP / C$25-C$30) means you can charge multiple devices at once and be able to use them in multiple different countries.

Do you still need use your charger when returning home?

Are you only bringing hand luggage?

Are you bringing just hand baggage

Are you only bringing hand luggage?

Will you always have reliable access to power?

  • Voltage in Japan is generally stable however if you need to visit another country you might need an adapter which will protect your devices. The electricity could often fluctuate in some areas which can possibly cause damage to your devices, you will need to use a power adapter which offers built in surge protection such as a travel power strip.
  • Bringing a portable charger or a solar backpack will prepare you for travelling to countries with limited electricity and any power cuts.  [4] [4] [17]
Are you flying long haul to travel to Japan?

Using a phone in the airport

Are you flying long haul to travel to Japan?

  • If you are embarking on an extended trip to get to Japan it's worth considering an airport-suitable charger that works in different power outlet types, one that can be packed in hand luggage and can be used to power phones and tablets.
  • As not all flights actually have power outlets for customers please consider bringing a portable charger which will recharge on the go. After landing in Japan you might have to use a mobile phone for making a telephone call, messenging, using mapping to locate accomodation or recalling itineraries; therefore it is recommended that your phone will have ample battery power remaining. [4]

What can I connect to a Japanese power outlet

Travel appliances that can connect to a Japanese power outlet

Beats Pill speakers which can connect to a Japanese power outlet

Jabra Bluetooth speakers which are compatible with a Japanese power outlet

Mobile phones which can be connected to the Japanese power outlet

Apple iPhones that work with a Japanese power outlet

Samsung Galaxy phones that can connect to a Japanese power outlet

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

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

Corrections

We endeavor to ensure all details on this page are correct and relevant to travellers visiting Japan, if you wish to contribute any useful information or feedback please email travel@wikiconnections.org. For more comprehensive technical details visit the Wikipedia page on AC power plugs and sockets[21]

Disclaimer

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. Japan - Japan National Tourism Organization Web Site.
  2. iec.ch - International Electrotechnical Commission World Plugs
  3. Type B plug adapter - Allows appliances to connect to Type B power outlets without converting voltage, between $5 to $10 USD (under £10 GBP / under C$10).
  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, estimated price between $45 to $50 USD (under £35 GBP / under C$50).
  5. Wikipedia - 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, estimated cost under $40 USD (£35-£40 GBP / C$35-C$40).
  7. 4 Port USB Wall Charger - A universal USB charger capable of charging up to 4 USB devices with swappable international adapters, costs between $10 to $15 USD (around £10 GBP / under C$20).
  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, between $15 to $20 USD (£15-£20 GBP / around C$25).
  9. Plug adapter set - Plug adapter set containing a number of different power plug adapters for use in different countries, between $15 to $20 USD (around £5 GBP / under C$25).
  10. Step up power converter - A step up power converter allows a 220-240 volt appliance to be used in a 100-120 volt power outlet, costing under $120 USD (£80-£90 GBP / C$120-C$130).
  11. Wikipedia - WikiPedia - Mains electricity by country -
  12. Rechargeable hair dryer - Rechargeable battery powered blow dryer suitable for travelling, estimated price between $150 to $160 USD (around £140 GBP / under C$210).
  13. Gas hair straighteners - Cordless ceramic hair straighteners powered by gas cartridges, between $20 to $25 USD (£20-£25 GBP / under C$50).
  14. 10,000mAh portable charger - Lightweight 10000mAh high-speed portable USB charger suitable for mobile phone charging, priced between $30 to $35 USD (around £20 GBP / under C$40).
  15. 20,000mAh portable charger - High capacity 20000mAh high-speed portable USB charger suitable for charging mobile phones and some tablets for several days, estimated price between $45 to $50 USD (£35-£40 GBP / under C$50).
  16. USB-C PD power bank - Power Delivery charger suitable for charging laptops with USB-C support, priced at between $120 to $130 USD (£100-£110 GBP / under C$150).
  17. Solar backpack - A solar backpack will charge USB devices or an internal power bank when left in sunlight, between $90 to $100 USD (under £80 GBP / under C$140).
  18. Solar power bank - Portable power bank with solar cells which can recharge when placed in sunlight and power any USB powered device, between $20 to $25 USD (under £30 GBP / under C$60).
  19. 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, estimated cost between $90 to $100 USD (under £110 GBP / under C$70).
  20. 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, estimated cost between $160 to $170 USD (under £110 GBP / under C$90).
  21. Wikipedia - AC power plugs and sockets -