Korea voltage & adapter guide
Korea uses Type C and Type F plugs (round, two-pin). Voltage is 220V at 60Hz. Modern laptops and phones are dual-voltage (just need a plug shape adapter). Hair dryers, curling irons, and most US-imported hair tools are 110V only and will burn out, run very slow, or trip hotel breakers. This tool tells you what's safe, what's not, and what adapter you need.
Device compatibility check
What this solves
Most guides say "bring an adapter" without telling you that some devices will literally burn out. Hair dryers are the most common victim. This tool tells you per-device: whether to bring it, what adapter, and whether you'll need a converter.
Plug types (C and F)
Type C: round, two-pin (ungrounded). Type F: round, two-pin (grounded side clips). Korean outlets usually have both pin holes (compatible with both). Adapt your plug, not the voltage.
220V at 60Hz
Korea is 220V at 60Hz. Same as Japan (which is 100V at 50/60Hz). US devices at 110V will underperform or burn out. UK at 230V is close — most 230V UK devices work.
Dual-voltage devices
Modern laptops, phone chargers, camera battery chargers have auto-sensing (100-240V). Just need a plug adapter, not a converter. Read the fine print on the charger.
Hair tools
110V US hair dryers / curling irons WILL burn out on 220V — they have no protection. Either buy a Korean dual-voltage tool (다이소 ₩5,000) or skip and use the hotel's.
How to read the result
- Verdict = safe / adapter only / converter / skip.
- What to do = specific recommendation.
- Buy in Korea = where to source if needed.
Limitations
- Some older Korean hotels have ungrounded outlets — your grounded plug won't fit.
- Cheap universal adapters may lack the ground pin for high-power devices.
- Korean grid is reliable; rare outages. Public EV stations sometimes interrupt.
- USB-C PD laptops work with any USB-C PD charger.
- Korean converter is cheaper in Korea (₩2,000–₩5,000 at 다이소) than at airport.
FAQ
Should I bring a hair dryer?
If 110V, NO. If dual voltage, yes with adapter. Korean hotels provide hair dryers in room (not always premium quality).
What adapter for Apple/Samsung chargers?
Just a Type C plug adapter. Chargers are auto-sensing.
Are Korean outlets grounded?
Most newer ones yes (3-pin). Older hotels may have 2-pin only.
Where to buy an adapter in Korea?
다이소 (Daiso, ₩2,000-5,000), convenience stores, or hotel front desk (₩5,000+).