ESTA INFORMATION
Power Sockets & Voltage in the USA
In short: the USA runs on 120 V and 60 Hz, with type A/B sockets. Plugs from Australia, New Zealand, Ireland and Singapore do not fit — you need a travel adaptor. Whether you also need a voltage converter depends on the rating label of your device.
The USA compared with Australia, Ireland, New Zealand and Singapore
Figures from the International Electrotechnical Commission (IEC):
| Country | Voltage | Frequency | Plug type |
|---|---|---|---|
| USA | 120 V | 60 Hz | A / B |
| Australia | 230 V | 50 Hz | I |
| New Zealand | 230 V | 50 Hz | I |
| Ireland | 230 V | 50 Hz | G |
| Singapore | 230 V | 50 Hz | C / G / M |
Travel adaptor: pack one in any case
The angled flat pins of type I plugs (Australia, New Zealand) and the three rectangular pins of type G plugs (Ireland, Singapore) do not fit American sockets with two flat parallel pins (types A and B). Without an adaptor, you will not be able to plug in your devices.
Voltage converter: check the rating label
Whether a device can handle 120 V is shown on the charger or the rating label (editorial note):
- “100–240 V”: the device works on both voltages — an adaptor is enough
- “230 V” or “220–240 V” only: you need a voltage converter, or it is better to leave the device at home
Sources and currency of information
Last reviewed: 17 October 2026. This website is an independent information service and is not an official website of the US Government or U.S. Customs and Border Protection (CBP).
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