⚡ GLOBESOCKET Checker › Japan

Do you need a travel adapter for Japan?

Japan is the single most unusual destination on the planet for travel power, and not because of the plug shape. Japanese sockets take the same flat two-pin Type A and three-pin Type B plugs you find in the United States and Canada - so North Americans rarely need an adapter at all. The catch is the voltage: Japan runs on just 100 volts, the lowest mains voltage of any major country. To complicate things further, the country is split down the middle on frequency - 50 Hz in the east (including Tokyo) and 60 Hz in the west (including Osaka and Kyoto).

Do you need an adapter? It depends where you're coming from

Coming from	Plug adapter	Voltage
From the United States	Not needed	Compatible
From the UK	Adapter needed	Check converter
From continental Europe	Adapter needed	Check converter
From Australia / New Zealand	Adapter needed	Check converter

Plug adapters change the shape only. A "Check converter" flag means the voltage differs from your home country - fine for dual-voltage gear (phones, laptops, cameras marked 100-240 V) but risky for single-voltage appliances like hair dryers and travel kettles.

Practical tips for Japan

• Travellers from the US and Canada: your plugs fit, and at 100 V vs your home 120 V the small difference is harmless for chargers and electronics.
• Travellers from the UK, Europe or Australia: you need an adapter, and because your devices expect 220-240 V, single-voltage items (hair tools, kettles) need a converter or they simply won't heat properly at 100 V.
• The 50/60 Hz east-west split only matters for old analogue clocks and some motorised devices; phones, laptops and cameras are unaffected.
• High-end hotels in Tokyo and Osaka sometimes provide a few 110-120 V outlets in bathrooms for shavers - handy but never guaranteed.

As an Amazon Associate we earn from qualifying purchases. (Replace with your tagged, live-price link.)

Frequently asked questions

Do Americans need an adapter in Japan?

No. US and Canadian Type A/B plugs fit Japanese sockets directly. The voltage is slightly lower (100 V vs 120 V), which is harmless.

Will my European hair dryer work in Japan?

Only if it is dual-voltage. A 230 V-only dryer will underperform or fail on Japan's 100 V supply even with a plug adapter.

Is the plug different in Tokyo and Osaka?

No, the plug is the same nationwide. Only the frequency differs (50 Hz east, 60 Hz west), which doesn't affect modern electronics.

Other destinations