The Best Travel Adapters for Japan
| Voltage | 100V |
|---|---|
| Frequency | 50Hz |
| Plug types | Type A, B |
Best overall
Covers Type A/B, compact, with built-in USB-C.
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Best overall adapter for Japan ↗We may earn a commission — it never changes our verdict.
Best budget
A reliable, cheap single-country adapter.
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Budget Type A/B adapter ↗We may earn a commission — it never changes our verdict.
Best for multiple devices (USB-C / GaN)
Charges phone, laptop and more at once.
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Multi-port GaN travel adapter ↗We may earn a commission — it never changes our verdict.
Do you also need a voltage converter in Japan?
Usually not — Japan's 100V is close to US voltage.
What to avoid
- Cheap adapters with no grounding option if your device has a 3-prong plug.
- Bulky all-in-one converters you don't need — most modern gear is dual-voltage.
FAQ
What adapter do I need for Japan?
Japan uses Type A/B sockets, so you need a Type A/B plug adapter (or a universal adapter that includes it).
Do I also need a voltage converter in Japan?
Rarely — Japan runs 100V, close to the US 120V.
Is Japan 230V or 110V?
Japan runs 100V at 50Hz.
Power outlets in Japan · Adapter vs converter
Guidance only — not professional electrical advice. Always confirm against your device's label before plugging in. Local wiring (especially in hotels and older buildings) can vary.