Can I use my United States plug in Japan?
A straight answer for United States devices on a Japan trip — plugs, voltage and frequency compared.
No adapter needed
Your Type A plugs fit Japan sockets. Frequency differs (60 Hz vs 50 Hz), which is fine for chargers and most electronics but can affect older clocks and some motors.
Side by side
| United States | Japan | |
|---|---|---|
| Plug types | Type A and Type B | Type A and Type B |
| Voltage | 120 V | 100 V |
| Frequency | 60 Hz | 50 Hz |
| Socket standard | NEMA 1-15, NEMA 5-15, NEMA 14-30, NEMA 14-50 | JIS C 8303 |
What to pack
- Your Type A and Type B plugs fit Japan sockets — and the voltage matches.
- Nothing extra for frequency: chargers and laptops are unaffected, though mains clocks and older motors can run fast or slow.
- A second adapter if you travel with a partner — they are cheap and easy to lose.
Both countries in detail
United States power plugs
Type A, Type B at 120 V / 60 Hz.
Japan power plugs
Type A, Type B at 100 V / 50 Hz.