Plug adapter for the United States from Japan
What travellers from Japan need to charge and power their devices in the United States: plugs, voltage and frequency, with the rest of the trip basics below.
Plug adapter
Not needed
Your Type A plugs fit the United States' Types A and B sockets.
Voltage
Same band
Japan 100 V → the United States 120 V. No converter needed; high-power heaters and dryers run a little hotter.
Frequency
Different
50 Hz / 60 Hz → 60 Hz. Chargers don't mind; mains-timed clocks and some motors may run fast or slow.
Your plug, their socket
fits
Your devices in the United States
Look for the “INPUT” line on the charger or label. A range such as 100–240V ~ 50/60Hz means the device adapts by itself and needs only a plug adapter.
| Device | Usually | In the United States |
|---|---|---|
| Phone, tablet and laptop chargers | 100–240 V | Works as is |
| Camera and power-bank chargers, e-readers | 100–240 V | Works as is |
| Electric shavers, toothbrushes | often 100–240 V; check | Works |
| Hair dryers, straighteners, curling irons | single voltage | Works |
| Kettles, irons, travel cookers | single voltage, high power | Works |
| Plug-in clocks, timers, some fans | 50 Hz / 60 Hz | May run fast or slow on 60 Hz |
The rest of the trip basics
- Time
- The United States is 14 h behind of Japan right now (UTC−5 vs UTC+9, capitals).
- Money
- The US Dollar (USD): 1 JPY = 0.006359 USD (ECB reference rates, 2026-10-30). Everyday prices are about 145% of Japan's.
- Driving
- Switch sides: the United States drives on the right (Japan drives on the left). Look left first when crossing.
- Advisories
- UK: no FCDO warnings. Details
- Next holidays
- 11 Nov Veterans Day · 26 Nov Thanksgiving Day · 25 Dec Christmas Day All 13
- Calling code
- +1