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Travel Plug Adapter for Guam

You are in luck! Guam uses the same type A/B outlets as found in the US so you should not need any adapters as long as your appliances have standard US 2 or 3 pin plugs.

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Please be aware that whilst a travel adapter will allow you to physically plug a US plug into a different outlet it will not change the voltage or frequency of the supply.

Warning triangle Voltage - The mains voltage in Guam is 110 V which is technically not compatible with US appliances as it is too low (US voltage is currently specified as 120 V + /- 5%). The difference is however small and many appliances will still work perfectly well. If you have sensitive or expensive items such as medical equipment or computers you should check to see if they will work. Items such as these will often specify "100 - 240V" either on the equipment or the power supply (if it has one). If not then you may need a transformer to operate your appliance.

Frequency - The frequency is 60 Hz which is the same as the US.

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More Information

Find loads of useful info about Guam on wikitravel
Government travel advice
Global travel advisory map
Travel weather
Local time in Guam
Today's exchange rates
Interactive map - Zoom and pan to any country in the world.

Please note that while we take great care to give the best advice available our recommendations may not always be the most suitable for your particular circumstances. When you travel as much as we do you come to realise that some countries just don't know how to stick to the rules! Please use our recommendations responsibly and do some extra research on the particular area that you are travelling to if necessary.

Plug / Outlet Types in use in

Voltage: 110 V Warning triangle
Frequency: 60 Hz

Type A Outlet used in Guam
Type A Outlet

Type A Plug used in Guam
Type A Plug

Type B Outlet used in Guam
Type B Outlet

Type B Plug used in Guam
Type B Plug

At a Glance

Guam flag
(Jul 2007 estimate)"
549 km2
(212 sq mi)
100 %
Time Zone:
UTC +10
Dialling Code:
United States Dollar (USD)
"English, Chamorro"
Country Code:
(ISO 3166-1 alpha-2)
Country Code:
(ISO 3166-1 alpha-3)
Free Country Flags (Gang of the Coconuts)
CC BY-SA 3.0
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This will help us to show you adaptors that will work with your domestic devices.

Travel Adaptor UK


Type G plug


Type G socket
Travel Adaptor USA


Type A plug
Type B plug


Type A outlet Type B outlet

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