Using United States Electronics in Japan
United States and Japan share the same voltage zone, so most devices only need a plug adapter for the socket shape.
United States (120V) vs Japan (100V) at a glance
| Spec | United States | Japan |
|---|---|---|
| Voltage | 120V | 100V |
| Frequency | 60Hz | 50Hz |
| Plug types | Type A/B | Type A/B |
Your United States devices in Japan
The adapter we recommend
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FAQ
Do United States plugs work in Japan?
Often yes — the plug shapes are compatible. But check the voltage before plugging single-voltage devices in.
Will my United States hair dryer work in Japan?
The voltage matches, so a dual-voltage or compatible model is fine — you may still need a plug adapter.
Is the voltage different between United States and Japan?
United States is 120V and Japan is 100V. They are in the same voltage zone.
Power outlets in Japan · Adapter vs converter
Guidance only — not professional electrical advice. Always confirm against your device's label before plugging in. Local wiring (especially in hotels and older buildings) can vary.