Japan uses Type A and Type B outlets with 100V electricity. If you are traveling from the US or Canada, your standard two-prong plugs (Type A) fit Japanese outlets without any adapter. Three-prong plugs need a simple grounding adapter. Travelers from the UK, Europe, Australia, and most of Asia will need a travel adapter. The good news: Japan's 100V power is close enough to 120V that most dual-voltage electronics (phones, laptops, cameras) work without a converter.
What plugs into the wall in Japan.
The exact plug types you'll find at the outlet, and what each origin country needs to bring.
Type A is the standard two-flat-pin outlet found everywhere in Japan, from hotel rooms to train station walls. Type B adds a round grounding pin below the two flat pins. You will encounter Type A far more often. Older buildings, traditional ryokans, and budget hotels almost exclusively use Type A. Newer construction and international hotels sometimes have Type B as well. Neither type has a built-in switch like Australian or UK outlets.
Your standard two-prong plugs fit directly into Japanese Type A outlets. No adapter needed for most devices. Three-prong (grounded) plugs need a small grounding adapter or cheater plug.
You need a Type G to Type A adapter. UK three-pin plugs will not fit Japanese outlets. A universal travel adapter works well.
European round-pin plugs do not fit Japanese flat-pin outlets. You need a Type C/E/F to Type A adapter.
Australian angled flat pins do not fit Japanese outlets. You need a Type I to Type A adapter.
Chinese Type A plugs (two flat pins) fit Japanese outlets directly. Type I plugs need an adapter.
100V, 50Hz (East) / 60Hz (West) and what it means.
Voltage decides whether your gear survives. Frequency mostly doesn't matter — except for a handful of motorized devices.
Japan is the only major country in the world that uses 100V electricity. This is lower than the 120V used in the US and significantly lower than the 220-240V used across Europe, Asia, and Australia. The practical impact for travelers is minimal for most devices, but there are a few things to know.
Check the fine print on your charger. If it says INPUT: 100-240V, it handles Japan's 100V without any converter. This covers virtually all phone chargers, laptop adapters, tablet chargers, camera battery chargers, and electric toothbrush bases.
Hair dryers rated for 120V or 220V only (not dual voltage)Curling irons and flat irons without auto-voltageSome older electric shaversAmerican coffee makers or heating appliancesTravel kettles rated for 120V only
Eastern Japan (Tokyo, Yokohama, Sendai) uses 50Hz while western Japan (Osaka, Kyoto, Nagoya, Hiroshima) uses 60Hz. This split dates back to the 1800s when Tokyo imported German 50Hz generators and Osaka imported American 60Hz generators. For travelers, this frequency difference is irrelevant for modern electronics. It only matters for older motorized appliances like analog clocks or turntables.
Consider buying a low-cost Japanese hair dryer at Don Quijote or BIC Camera for about 2,000-3,000 yen ($13-$20) instead of packing a converter. It is lighter and more reliable than running a foreign appliance through a converter.
What to actually pack for Japan.
A universal adapter handles the whole trip. Plus the buying-decision filters worth knowing before you click checkout.
Since Japan uses Type A and B outlets, you need an adapter that converts your home plug into two flat pins. Here are our top picks for Japan-bound travelers:
- →Get a compact adapter specifically for Type A if you only visit Japan. Universal adapters work but are bulkier than necessary.
- →If you plan to visit other Asian countries on the same trip, a universal adapter covers Japan, Thailand, China, and more.
- →Multi-port USB adapters are ideal for Japan since outlets in hotel rooms are often limited to two or three.
- →Avoid cheap adapters with loose pin connections. A snug fit matters when your phone charges overnight.
Universal & Type A adapters
Universal adapters that handle Japan plus 150+ other countries — and country-specific plugs if you want a smaller form factor.
Browse on Amazon ↗Tech EssentialsUSB chargers & power banks
Multi-port USB-C chargers and travel-rated power banks. The other half of the kit you'll actually use daily on the trip.
Browse on Amazon ↗Where to plug in once you check in.
Outlet availability varies hugely by accommodation type. Knowing what to expect helps you plan — especially if you're carrying multiple devices.
Japanese hotels and accommodations vary widely in outlet availability. Here is what to expect across different lodging types:
International Hotels (Marriott, Hilton, Hyatt)
Typically offer 2-4 outlets near the desk and 1-2 at the bedside. Many have universal outlet panels that accept US, UK, and European plugs. Some have USB-A ports built in. The concierge desk usually has loaner adapters.
Business Hotels (APA, Toyoko Inn, Dormy Inn)
Usually have 2-3 Type A outlets per room. One near the desk, one by the bed, and sometimes one in the bathroom. No universal panels. These hotels are popular with domestic travelers, so adapters are not always available at the front desk.
Traditional Ryokans
Expect 1-2 Type A outlets per room, often placed low on the wall. Some older ryokans in rural areas have very limited outlets. Bring a compact power strip to share one outlet among multiple devices.
Capsule Hotels
Each capsule typically has one outlet (Type A) and sometimes a USB port. Outlets are inside the capsule near the pillow area. Power strip not recommended due to space constraints.
Airbnb and Vacation Rentals
Standard Type A outlets throughout. Outlet availability depends on the property age and renovation status. Newer apartments tend to have more outlets.
If you forget yours, buy on arrival.
The places we'd actually walk into in a pinch — from airport kiosks to chain electronics stores.
Forgot your adapter or need a backup? Japan has excellent electronics retail. Here is where to find travel adapters once you arrive:
Airport Shops (Narita & Haneda)
Both airports have electronics shops in the arrivals area. Expect to pay 800-1,500 yen ($5-$10) for a basic adapter. Narita has a Laox duty-free electronics store. Haneda Terminal 3 has convenience stores with basic adapters.
BIC Camera / Yodobashi Camera
Japan's large electronics chains stock every adapter imaginable. Universal adapters cost 1,000-3,000 yen. Staff speak some English and can help you find the right one. Locations in every major station area (Shinjuku, Akihabara, Umeda).
Don Quijote (Donki)
This discount store chain is open until late (often 24 hours in Tokyo). Travel adapters in the electronics section cost 500-1,500 yen. Locations throughout Tokyo, Osaka, Kyoto, and every major tourist area.
Daiso (100 Yen Shop)
Basic single-conversion adapters for 100-300 yen. Quality is acceptable for short trips. Found in most train stations and shopping malls.
Convenience Stores (7-Eleven, FamilyMart, Lawson)
Some locations near tourist areas stock basic adapters and portable chargers. Not guaranteed, but worth checking. USB cables and power banks are more commonly available.
What works, what doesn't.
The ten devices most travelers ask about — clear-eyed verdicts for Japan specifically.
Here is a device-by-device breakdown of what works in Japan without any converter:
Outlets in the wild, across Japan.
Where to find power between hotel rooms — trains, cafés, public buildings, the practical stuff.
Japan is surprisingly well-equipped for keeping devices charged while you explore:
Shinkansen (bullet trains) have power outlets at every seat on the window side and aisle side in newer trains (N700S series). Older trains only have outlets at window seats. All are Type A.
Many cafes, especially chains like Starbucks, Doutor, and Tully's, have outlets at counter seats. Japanese customers use these for laptop work, and tourists are welcome to do the same.
Convenience stores (7-Eleven, FamilyMart) sell portable chargers for 1,500-3,000 yen that include a USB cable.
Rental portable WiFi hotspot devices (pocket WiFi) come fully charged and include a USB charging cable. The battery lasts about 8-10 hours.
Tokyo Metro and major train stations increasingly have free charging spots, though they can be crowded during rush hour.
Libraries, co-working spaces like WeWork and Fabbit, and department store rest areas often have free outlets available.
The four partners we travel with.
eSIM for landing-day data, VPN for hotel WiFi, insurance for the gear, and a clean airport pickup in Japan.
Saily eSIM
Activate before you fly so you have data the moment you land in Japan. No SIM-card hunt at the airport, no roaming charges.
NordVPN
Hotel and café WiFi is open and shared. NordVPN encrypts everything — banking, streaming, work — so no one on the same network can snoop.
Ekta Travel Insurance
Your laptop and camera are worth more than the trip itself. Ekta covers electronics, medical, and trip cancellation for Japan.
Welcome Pickups
Skip the taxi-line negotiation. English-speaking driver waits at arrivals in Japan with your name on a sign — fixed price, no surprises.
What travelers ask about Japan.
The same handful of questions, every week. Schema below feeds them straight to Google.
Same depth, other countries.
The other nine country adapter guides — each written from the ground.
230V · Type G
230V · Type I
230V · Type C/F
230V · Type C/E
220V · Type A/C/I
127V/220V · Type C/N
230V · Type C/F/L
230V · Type C/F
230V · Type A/B/C
230V · Type C/F
230V · Type C/F
230V · Type D/M/N