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Japan · Type A/B · 100V

Japan Power Plug & Voltage Guide

Japan uses the same plug type and a similar voltage to the US — no adapter needed.

Want the full guide? Get a PDF with plug details and adapter-vs-converter guidance for Japan — free.

Japan at a glance

Plug typesA, B
Voltage100V
Frequency50Hz
US standardType A/B, 120V, 60Hz

Type A (flat parallel pins, ungrounded (US/Canada/Japan style)), Type B (flat parallel pins plus a round ground pin (US/Canada style)).

Frequently asked questions

What plug type does Japan use?

Japan uses Type A (flat parallel pins, ungrounded (US/Canada/Japan style)), Type B (flat parallel pins plus a round ground pin (US/Canada style)).

Do I need a plug adapter for Japan from the US?

No — Japan uses the same plug shape as the US, so a standard US plug fits without an adapter.

What voltage does Japan run on?

Japan runs on 100V at 50Hz, close enough to the US standard of 120V that most devices work fine.

Do I need a voltage converter for Japan?

Most modern electronics (phone and laptop chargers) are dual-voltage (100-240V) and only need a plug adapter, not a converter. Single-voltage, high-wattage devices like hair dryers or straighteners may need an actual voltage converter — check the label near the plug prongs for the input voltage range.