Plugs & voltage in the United States
Types A and B · 120 V · 60 Hz
The same answers apply to Canada.
The United States is the most populous country that uses exactly Types A and B. Both of its neighbours use exactly the same plugs: Canada and Mexico; Canada also has the same voltage and frequency. Only 10 of the 139 countries list a nominal 120 V, an uncommon value.
Do I need an adapter for the United States?
Where are you travelling from?
Plug straight in.
Adapter, and mind the voltage.
120 V here, 230 V at home.
Adapter, and mind the voltage.
120 V here, 230 V at home.
Adapter, and mind the voltage.
120 V here, 230 V at home.
Adapter, and mind the voltage.
Type A plugs fit; Type I plugs need an adapter to Types A or B.
120 V here, 220 V at home.
Adapter, and mind the voltage.
120 V here, 230 V at home.
Plug straight in.
120 V here, 100 V at home: the same range.
From the United States to anywhere · Any country to the United States
The power supply
Also in the data
Next door the nominal figure varies within the same range: Mexico lists 127 V, while Canada shares the 120 V used here.
Crossing a border
2 neighbours: 2 with the same plugs.
- CanadaA/B · 120 VSame plugs · same voltage
- MexicoA/B · 127 VSame plugs · same voltage
Same plugs as the United States
20 other countries use exactly A/B: 18 in the Americas and 2 in Asia. Next door: Canada and Mexico.
The plug types used here
Guides: 230 V vs 120 V countries · The 15 plug types explained
Source: Wikidata Q30; regions: UN M49 (Northern America). Sources & method