Do I need a plug adapter in Japan?

Yes, an adapter is required. Japan uses plug types A, B, which are different from those in United Kingdom.

What plug types are used in Japan?

Japan uses plug types A, B. United Kingdom uses types G.

Power plug in Japan: type, voltage, adapter needed?

Q: What is the voltage in Japan?

The voltage in Japan is 100V with a frequency of 50Hz. Note: this differs from 230V in United Kingdom.

United Kingdom→

Japan

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Prepare your trip in Japan: electrical outlets are different from those used in United Kingdom.

Adapter required

Type G

Type A/B

Incompatible plugs

100V

Warning: 230V → 100V

Check your devices

50Hz

Same frequency

No issues expected

No, plugs are not compatible

Type G plugs (United Kingdom) don't work with type A/B outlets (Japan).

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Plug type comparison between United Kingdom and Japan

Discover the differences between plugs used in United Kingdom and those used in Japan. This visual comparison helps you quickly identify if your devices will be compatible.

Plugs in United Kingdom

Type G

UK plug

Plugs in Japan

Type A

US plug

Adapter needed

Type B

US grounded plug

Adapter needed

Voltage and frequency information in Japan

Before plugging in your electronic devices in Japan, check that the voltage and frequency are compatible with your equipment to avoid damage.

Country	Voltage	Frequency	Plug types
United Kingdom	230V	50Hz	Type G
Japan	100V	50Hz	Type AType B

Voltage Converter May Be Required

The voltage is different: 230V → 100V. Check if your devices support dual voltage (100-240V).

Understanding voltage in Japan

Japan uses a 100V electrical network. Most modern devices (chargers, laptops) are 100-240V compatible and adapt automatically. Check your device labels before traveling in Japan. Motor appliances like hair dryers may require a converter.

Understanding frequency in Japan

The electrical network in Japan operates at 50Hz. This frequency mainly affects motor-driven devices (analog clocks, turntables). Modern electronics like smartphones and computers automatically adapt to different frequencies.

Frequently Asked Questions

Do I need an adapter for plugs in Japan?

Yes, you will need an adapter to use your electrical devices in Japan. Japan uses type A/B plugs which are not compatible with type G plugs used in United Kingdom. We recommend buying a universal adapter before your trip.

What is the voltage in Japan?

The electrical voltage in Japan is 100V. This is different from the voltage in United Kingdom (230V). Most modern devices (chargers, computers) support 100-240V and adapt automatically. Check your device labels.

What is the frequency in Japan?

The electrical frequency in Japan is 50Hz. This is the same as in United Kingdom. Frequency mainly affects motor-driven devices. Modern electronics adapt automatically.

What type of electrical plug in Japan?

Japan uses type A and B plugs. These plugs are different from those used in United Kingdom (type G), so you will need an adapter. Type A plugs are most common in Japan.

Travel tips for Japan

Prepare your trip in Japan by following these recommendations to avoid unpleasant surprises with your electrical devices.

Most modern devices (phones, computers) have built-in converters (100-240V)

Check your device adapter label before traveling

Hair dryers and curling irons often require a voltage converter

Consider buying a universal adapter for multiple destinations

Summary for Japan

To travel in Japan from United Kingdom, you will need a plug adapter. Japan uses type A/B plugs (100V, 50Hz), while United Kingdom uses type G plugs (230V, 50Hz). Consider getting a universal adapter before your trip.