USA to Japan Power Guide
Good news for American travelers: You typically do NOT need a plug adapter for Japan.Plug Shape (Type A & B)
- Type A (Two flat prongs): This is the standard in Japan. Your US plugs will fit perfectly.
- Type B (Three prongs with ground): Important! Many older Japanese outlets ONLY accept Type A (two prongs). If your US device has a 3-pin plug (grounded), you will need a 3-to-2 pin adapter.
Voltage Difference (100V vs 120V)
- USA runs on 120V.
- Japan runs on 100V (the lowest mains voltage in the world).
- Most Devices: iPhone chargers, laptop bricks, and camera chargers are "Universal Voltage" (100V-240V) and will work perfectly.
- Heating Appliances: Hair dryers and curlers from the US might run a bit slower or cooler because of the lower voltage, but they are generally safe to use for short trips.