Power
Do you need a plug adapter from United States to Japan?
No adapter needed
Plugs from United States fit sockets in Japan. Both use Type A/B, so you will not need an adapter.
United States to Japan
United States → Japan
- United States plugs
- A B
- Japan sockets
- A B
- Adapter
- Not required
- Voltage
- 120V → 100V
Voltage is broadly compatible: United States uses 120V, Japan uses 100V.
Common questions
Do I need a plug adapter from United States to Japan?
No. Both United States and Japan use Type A/B sockets, so your plugs will fit.
Will my devices work on Japan’s voltage?
Japan runs at 100V, 50/60Hz. Dual-voltage chargers (most phones and laptops) are fine; single-voltage devices may need a converter.