# United States → Japan

Your Type A and B plugs fit outlets in Japan.

## United States

- Plugs: A, B
- Outlets: B, A
- Voltage: 120V
- Frequency: 60Hz

## Japan

- Plugs: A
- Outlets: A, B
- Voltage: 100V
- Frequency: 50/60Hz

## Checklist

- No plug adapter: your plugs fit the Type A and B outlets in Japan.
- Check the label on each charger and appliance for "100-240V". Anything rated for 120V only needs a converter or a dual-voltage replacement in Japan (100V).
- Japan runs at 50/60Hz. Chargers don't mind; motors and mains-timed clocks may run differently.
- A power bank in your carry-on, not your checked bag. Under 100Wh needs no airline approval.
- One multi-port USB-C charger, so a single outlet charges everything.
- Eastern Japan, including Tokyo, runs at 50Hz; western Japan, including Osaka, at 60Hz. It only matters for motors and clocks.
- Many Japanese outlets have two equal slots, so a US plug with one wider blade may not go in. An adapter fixes it.

## Sources

- [IEC World Plugs (retired by the IEC; archived copy)](https://web.archive.org/web/20251128000000/https://www.iec.ch/world-plugs)
- [Wikipedia, Mains electricity by country](https://en.wikipedia.org/wiki/Mains_electricity_by_country)
- [WorldStandards, Plug, socket & voltage by country](https://www.worldstandards.eu/electricity/plug-voltage-by-country/)

[WillItPlug](https://www.willitplug.com/from/united-states/to/japan/)