Plug adapter for the United States from South Korea
What travellers from South Korea need to charge and power their devices in the United States: plugs, voltage and frequency, with the rest of the trip basics below.
Plug adapter
Needed
Bring a Types A and B adapter (or a universal one that covers both).
Voltage
Lower: 120 V
South Korea 220 V → the United States 120 V. 230 V-only devices need a step-up converter.
Frequency
Same
60 Hz → 60 Hz.
Your plug, their socket
does not fit
does not fit
Your devices in the United States
Look for the “INPUT” line on the charger or label. A range such as 100–240V ~ 50/60Hz means the device adapts by itself and needs only a plug adapter.
| Device | Usually | In the United States |
|---|---|---|
| Phone, tablet and laptop chargers | 100–240 V | Plug adapter only |
| Camera and power-bank chargers, e-readers | 100–240 V | Plug adapter only |
| Electric shavers, toothbrushes | often 100–240 V; check | Check the label: single-voltage ones need a converter |
| Hair dryers, straighteners, curling irons | single voltage | Weak or won't run on 120 V: use the hotel's |
| Kettles, irons, travel cookers | single voltage, high power | Leave at home: converters for these are heavy and costly |
The rest of the trip basics
- Time
- The United States is 14 h behind of South Korea right now (UTC−5 vs UTC+9, capitals).
- Money
- The US Dollar (USD): 1 KRW = 0.0007489 USD (ECB reference rates, 2026-10-30). Everyday prices are about 162% of South Korea's.
- Driving
- On the right, as at home.
- Advisories
- UK: no FCDO warnings. Details
- Next holidays
- 11 Nov Veterans Day · 26 Nov Thanksgiving Day · 25 Dec Christmas Day All 13
- Calling code
- +1