Tumon power plugs and voltage
Check your plugs before you fly
Tumon uses Type A and Type B sockets at 110 V / 60 Hz. Pick the country you are travelling from to see exactly what you need.
- Plug types
- A / B Same as the rest of Guam
- Voltage
- 110 V Low-voltage grid
- Frequency
- 60 Hz 60 Hz
- Standard
- NEMA 1-15, NEMA 5-15 Guam
What to expect in Tumon
Tumon (Guam) runs on 110 V / 60 Hz with Type A and B sockets, the US standard. US plugs fit.
Power in Guam comes mainly from diesel, renewables. Grid reliability is described as good.
Good to know: US standard — A/B sockets at 110 V / 60 Hz.
What to pack for Tumon
- A travel adapter with Type A and Type B on the socket side.
- A step-up transformer only if you are bringing 230 V appliances from Europe or Asia.
- A device label check: anything marked 100–240 V needs the adapter, nothing else.
The sockets
Guam in full
Voltage, frequency, socket standard and travel notes for the whole country.
Adapter checker
Compare your home country with Guam in one click.