Japan Power Adapter and Voltage Guide: Type A, 100V, 50Hz vs 60Hz
JNTO: Japan is 100V AC nationwide; 50Hz east / 60Hz west. Type A plugs, when you need an adapter vs a transformer, where to buy.
Phone dead at check-in is a boring way to start Tokyo. Japan’s electricity rules are simple if you read the box — and JNTO already printed them.
Official: JNTO – Plugs & Electricity
FAQ short version: What is the voltage and plug type used in Japan?
The three numbers that matter
From JNTO:
| Spec | Japan |
|---|---|
| Voltage | 100V AC nationwide |
| Frequency | 50Hz eastern Japan · 60Hz western Japan (incl. Nagoya, Kyoto, Osaka) |
| Plug | Type A (FAQ) |
US/Canada travelers: your flat Type A plug often fits, but Japan is 100V not 120V — most USB chargers still work; some hair tools heat weaker. UK/EU/AU travelers: you almost always need a physical adapter to Type A.
Adapter vs transformer (don’t mix them up)
- Plug adapter — changes the shape of the pins. Does not change voltage.
- Step-down transformer — changes voltage. JNTO says dual-voltage hair dryers / travel irons / shavers should work; other cases may need a step-down transformer.
Read the brick:
| Device label | What to bring |
|---|---|
| INPUT 100–240V, 50/60Hz | Type A adapter only (if your plug isn’t Type A) |
| INPUT 100–120V | Usually adapter only |
| INPUT 220–240V only | Transformer or buy/borrow a local tool — adapter alone can damage it |
| High-watt hair tools | Tiny “travel converters” often can’t handle 1000W+ — use hotel dryer or buy a Japan 100V model |
Where to buy if you forgot
JNTO: conversion plugs and transformers are easy to find in urban electronics districts — Tokyo’s Akihabara, Osaka’s Nipponbashi, and big retailers like Yodobashi Camera or Bic Camera.
Airport convenience stores sometimes stock basic adapters at tourist prices. Pack one 2-outlet USB charger and one Type A adapter strip and you’re done for phones/cameras.
Charging on the move
JNTO notes newer Shinkansen cars have outlets by window seats — ask when buying if you need one. Some hamburger chains and family restaurants also have outlets.
Hotel desk USB ports vary; bring your own brick. For eSIM setup nights, a charged phone beats lobby Wi-Fi theater — see eSIM setup.
FAQ
Will my US plug work without an adapter?
Often physically yes (Type A). Confirm the device accepts 100V.
Is eastern vs western frequency a problem for laptops?
Almost never for modern switch-mode chargers marked 50/60Hz. Old clocks/turntables care more.
Can I use a UK 3-pin with a cheap adapter?
Yes for dual-voltage electronics. Grounding/quality of the adapter matters for high-draw tools — don’t cheap out on heat appliances.
Hotels lend adapters?
Sometimes. Don’t bet the trip on it — buy once in Akihabara / Bic.
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Alex Rivera
Travel & Living Editor
Expat guide. Helps people actually move to and navigate Japan.
Moved from London to Tokyo in 2018. Went through the full gaijin experience—visa, housing, banking, the works. Now writes the guide he wished he had.
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Moving to Tokyo, expat life, travel, Kyoto vs Tokyo, onsen
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