Plug Type World

Japan → Guam

Plug adapter & voltage compatibility

Japan → Guam

Japan plugs

Plug type AType A
Plug type BType B

Guam plugs

Plug type AType A
Plug type BType B
Shared plug types: A, B
Compatibility: Compatible

Voltage — Japan 100V — Guam 110V

Voltage difference is small. Most electronics will work safely.

Device compatibility (phones)

Phones almost always support 100–240V, so yours should work safely. Check your charger label to confirm.

You likely only need a plug adapter (if socket shapes differ). Voltage is close between these countries.

Try the compatibility tool · Adapter vs converter