Do I Need an Adapter? Powered by Caballeros Vacations

Guam: plug type, voltage, and travel adapter guide

Plug types
Type A
Type B
Voltage
110V
Frequency
60Hz

Guam uses Type A, Type B outlets at 110V, 60Hz.

Do travellers to Guam need an adapter?

It depends where you're coming from. Here's what we'd pack from the most common origins. Click any row for the full per-pair breakdown.

From Plug adapter Voltage converter Full guide
United States
Type A, B · 120V
 Not needed Not needed United States → Guam
Canada
Type A, B · 120V
 Not needed Not needed Canada → Guam
United Kingdom
Type G · 230V
 Needed Check devices United Kingdom → Guam
Australia
Type I · 230V
 Needed Check devices Australia → Guam
Germany
Type C, F · 230V
 Needed Check devices Germany → Guam
France
Type C, E · 230V
 Needed Check devices France → Guam
Italy
Type C, F, L · 230V
 Needed Check devices Italy → Guam
Spain
Type C, F · 230V
 Needed Check devices Spain → Guam
Netherlands
Type C, F · 230V
 Needed Check devices Netherlands → Guam
Ireland
Type G · 230V
 Needed Check devices Ireland → Guam
Switzerland
Type C, J · 230V
 Needed Check devices Switzerland → Guam
Belgium
Type C, E · 230V
 Needed Check devices Belgium → Guam

Frequently asked

What type of plug does Guam use?
Guam uses Type A and Type B outlets at 110V, 60Hz.
What's the voltage in Guam?
Guam runs on 110V at 60Hz — that's the low-voltage standard. Dual-voltage devices (most phones, laptops, modern chargers labelled "100-240V") work as-is. Single-voltage devices like hair dryers, curling irons, and travel kettles do not without a converter.
Do I need a travel adapter for Guam?
Only if your home country uses a different plug type. Travellers from any country whose plugs aren't Type A/B will need an adapter. Use the table above or the calculator to check your specific pair.

Check a specific pair

Not coming from one of the origins above? Drop your actual starting country in and we'll compute the verdict for you.