Can I use my phone charger in Japan? Voltage and plugs

Yes, if the INPUT line on the charger includes 100V. Apple says its USB power adapters are designed for 100–240V AC at 50–60Hz. The plug is the other check: Japan's outlets take Type A plugs with two flat pins (JNTO).

Updated October 3, 2026

100VJapan's voltage (JNTO)

100–240VApple USB power adapters

1,500Wtwo-socket wall outlet, total (NITE)

Works if INPUT includes 100V

Read the INPUT line first

INPUT is what the charger takes from the wall. Japan supplies 100V, so 100V has to be inside the range.

How to read INPUT on a phone charger: 100-240V includes Japan's 100V, 220-240V does not. 50/60Hz works in east and west Japan.

Figure by japan-japan.com. Japan's 100V and 50/60Hz from JNTO.

What chargers say on their labels (makers' official pages)
Charger	INPUT as the maker writes it	100V inside?
Apple USB power adapters	100V AC to 240V AC at 50Hz to 60Hz	Yes Apple
Nintendo Switch 2 AC adapter	AC 100V-240V 50/60Hz 1.6A	Yes Nintendo
Nintendo Switch AC adapter	AC 100V-240V 50/60Hz 1A	Yes Nintendo

Apple Support (English)Apple USB power adapters are designed for use with power sources rated to provide 100V AC to 240V AC at 50Hz to 60Hz.Apple Support

The plug: Type A in Japan

Japan's outlets take Type A plugs (JNTO). Panasonic lists Type A and B for Japan.

Two flat parallel pins: fits Japan's Type A outlets. Official pages describe this plug for China, Taiwan, the United States, Thailand, the Philippines and Canada.
Two flat pins and a round earth pin (Type B): needs a socket with the third hole. JNTO names Type A for Japan's outlets; Panasonic lists Type A and B. Used in Taiwan and Mexico.
Round pins: a plug adapter to Type A. Used in South Korea, China, Thailand, Singapore, Vietnam, Indonesia, France, Germany, India, Italy and Spain.
Three rectangular pins: a plug adapter to Type A. Used in Hong Kong, Singapore, Malaysia and the United Kingdom.
Two flat pins in an inverted V: a plug adapter to Type A. Used in Australia.
Three pins in a triangle: a plug adapter to Type A. Used in China.

JNTO FAQIf you are traveling from overseas, you may need a plug adapter.JNTO FAQ

Charging on the go

JNTO points to seat outlets on new shinkansen models and to some hamburger chains and family restaurants.

JNTO (Japan National Tourism Organization)If you need to charge your appliances on the go, new shinkansen models have outlets next to the window seats. If you would like such a seat, please ask the staff when you purchase your ticket. Some hamburger chains and family restaurants have outlets available.JNTO

A two-slot 100V outlet and USB charging ports at a Lawson convenience store in Aichi

Photo: KKPCW（Kyu3） / CC BY-SA 4.0 / Wikimedia Commons (cropped)

JR Central: Supreme Class (English)To charge a smartphone or other device, please use the in-suite power outlets or USB charging ports (Type-A and Type-C compatible).JR Central

JR Hokkaido (English page)Equipped at all seats. Convenient for computer use or charging your cellular phone.JR Hokkaido

Which shinkansen seats have outlets

Wall outlets and power strips

NITE, Japan's product safety body, gives 1500W as the limit for a two-socket wall outlet in a home.

NITE (National Institute of Technology and Evaluation)一般住宅の壁に設置してあるコンセントは二口のものが一般的ですが、その場合、二口の合計で1500Wが接続可能な最大消費電力となっています。NITE

In English: Wall outlets in homes are commonly two-socket outlets. In that case, up to 1500W in total can be connected to the two sockets.

NITE (National Institute of Technology and Evaluation)接続可能な最大消費電力や定格電流を超えると発熱を生じ、テーブルタップの電源プラグが異常発熱したり、電源コードの絶縁被覆が破損・ショートしたりして発火するなどの事故につながります。NITE

In English: Going over the power or the rated current you can connect makes heat. The plug of a power strip can overheat, or the insulation of a cord can break or short out, leading to accidents such as a fire.

Chargers on the plane

Carry-on and checked-bag rules for chargers and power banks are on our carry-on pages.

Frequently asked questions

Can I use my iPhone charger in Japan?

Yes. Apple says its USB power adapters are designed for 100V AC to 240V AC at 50Hz to 60Hz, which includes Japan's 100V. Add a plug adapter if the plug is not Type A.

Do I need a voltage converter for my phone charger in Japan?

Not if INPUT on the charger includes 100V, such as 100-240V. JNTO says devices that are not dual-voltage need one.

Can I charge my phone on the shinkansen?

Yes, at seats with an outlet. JR Central's N700S has one at every seat. N700 and N700A have them at every Green Car seat, at window seats and in the front and back rows.