United States of America to Japan
United States of America uses Type A/B at 120V, while Japan runs Type A/B at 100V. Surprisingly compatible.
Need an Adapter?
No! Your United States of America plugs will fit Japan outlets
Need a Voltage Converter?
Maybe — check if your devices support 100V
🔍 Why This Route Matters
Traveling from United States of America to Japan means crossing more than just time zones. You're entering a completely different electrical ecosystem. You'll catch a break with plugs: Type A/B works in both United States of America and Japan. The 20 volt difference between United States of America (120V) and Japan (100V) is minor. Most electronics auto-adjust. Temperature measured in Celsius (°C). A little preparation goes a long way on this route.
Side-by-Side Comparison ⚡
🎯 What Locals Know (That Tourists Don't)
- ✦Uses 24H time format (e.g., 23:00)
- ✦Temperature measured in Celsius (°C)
- ✦Electrical system uses 100V at 50Hz with Type A/B plugs
- ✦Tap water safety: drinkable
- ✦Japanese hotels typically have only 1-2 outlets per room. Pack a power strip.
What You Need for This Trip 🧳
Plug Adapter
Not RequiredYour United States of America devices should fit Japan's outlets without an adapter.
Voltage Converter
May Be RequiredJapan uses 100V vs United States of America's 120V. Most modern electronics handle this automatically.
Airport & Arrival Tip
Most international travelers arrive through NRT, which has decent charging infrastructure. Most airport lounges have ample outlets and USB ports. Worth the day pass if you have a long layover. Airport express trains and shuttle buses usually don't have outlets. Charge before you board. First day is best for sorting out power issues. You'll be less stressed and more alert.
Packing Advice
Lucky you. Identical electrical systems mean no adapters or converters needed. Power banks must go in carry-on luggage (not checked bags). TSA and international rules are strict about this. Label your cables with colored tape or tags. Hotels have lost luggage full of identical black cables. Test all your adapters at home before packing. Discovering a faulty adapter at your hotel is frustrating.
Seasonal Considerations
Time of year matters for power planning in Japan, especially if you're visiting during temperature extremes. **Summer travel:** Summer heat means aggressive air conditioning. Battery life suffers in cold indoor environments. **Winter travel:** Cold weather kills battery life quickly. Keep devices close to your body to maintain charge. **Holiday season:** Peak travel times = longer airport waits = more charging opportunities if you're prepared. Plan for worst-case scenarios with your power setup. You'll be glad you over-prepared.