Adapter needed

Do I need a travel adapter for a trip to Guam?

Yes, you need a travel adapter (plug adapter) for a trip from Australia to Guam. In Guam, people are using different power plugs and power outlets that are not compatible with plugs from Australia!

Guam und Australia compared
Flag: Australia
IOutlets of type IOutlets
230 VoltVoltage
50 HertzFrequency
Flag: Guam
AOutlets of type ABOutlets of type BOutlets
110 VoltVoltage
60 HertzFrequency
Country information

About Guam

Flag: About Guam

Guam is a country in Oceania (Micronesia) with about 162 000 inhabitants on an area of almost 544 km². The capital of Guam is Hagåtña (1 000 inhabitants).

People in the country are mainly speaking English and Chamorro.

Guam does not have a neighbor country.

TLD: .guCurrency: USDCountry calling code: +1-671Country Code : GU
Power sockets

Which types of power plugs are used in Guam?

Guam uses power plugs of type A and B. Power outlets of type I, which are common in Australia, are not in use in Guam.

Mains voltage

What is the Electricity Voltage in Guam?

The voltage in Guam is 110 volts.

The voltage, therefore, is lower than the 230 volts in Australia. This difference means that you have to be cautious when using electrical devices purchased in Australia:

You should read the instruction manual of your device and check at which voltage it is safe to use.

If the voltage stated in the user's manual or on the device's power supply differs from the mains voltage in Guam, you should either not use your device there, or buy a voltage converter before departing.

Utility frequency

What is the utility frequency in Guam?

The utility frequency in Guam is 60 Hertz.

The frequency, therefore, is higher than the 50 Hertz in use in Australia. This difference may not be a problem for most of your devices, but you still have to be cautious:

Devices that either measure time, or are equipped with moving and rotating parts, are particularly dangerous! So, if you plan to use shavers, heaters, kitchen appliances or alarm clocks in Guam, read the instruction manuals to see if these devices are safe to use on the local utility frequency.

If the mains frequency specified in the manual or on the power supply is different from the rate used in Guam, you should not use the device!