From South Korea to Guam
When travelling from South Korea to Guam: None of your South Korea plug types fit in Guam. You will need a travel adapter. Voltage is different (230V → 110V). Check your charger label; if it doesn’t list 110V you’ll also need a voltage converter. Frequency is the same at 60Hz.
South Korea
GuamYour plugs
Type C
No fit
Type F
No fit
Accepted in Guam
Type A
Type B
0 of 2 plug type(s) match
You: C, F • Guam: A, B
No fit for: C, F
Voltage: 230V → 110V
Different voltage
You may need a voltage converter.
Frequency: 60Hz → 60Hz
Same frequency
You will need an adapter and likely a converterAdapters you may need
Your plug shape does not fully match. Voltage differs; check for 100–240V support.
About electricity in Guam
Guam is 110V/60Hz with Type A and B sockets. US standard.
Grid & history
GPA supplies the island from a mix of oil-fired plants and growing solar.
Availability
Reliable.
Sockets & hotels
Standard North American sockets.
Energy mix
Practical tips
- US plugs fit local sockets directly, so US travellers do not need an adapter.
- Voltage is 110V, so US plugs and chargers are designed for it.
Frequently asked questions
- Will my South Korea plug work in Guam?
- No. None of your South Korea plugs (Type C, Type F) fit in Guam sockets (Type A, Type B), so you will need a travel adapter.
- What plug type does Guam use?
- Guam uses Type A, Type B. The supply is 110V at 60Hz.
- Do I need a voltage converter for Guam when travelling from South Korea?
- Guam runs on 110V, while South Korea uses 230V. Check your charger label for a 100 to 240V rating; if it does not list 110V you will also need a voltage converter.
- Is the electrical frequency in Guam the same as South Korea?
- Frequency in Guam is 60Hz, the same as South Korea.