You need a travel adapter, and likely a voltage converter
South Korea: Type C/F · 220V → United States of America: Type A/B · 120V
Get a Type A adapter + converter↗The specs, row by row.
Plug shape, voltage, frequency — the four things that decide whether your gear works on this route.
The story behind the route.
Why this specific origin → destination pair has the quirks it does — local context the data alone won't show.
South Korea and United States of America couldn't be more different when it comes to power systems, and that matters for every device you pack. Your South Korea devices with Type C/F plugs won't fit United States of America's Type A/B outlets without an adapter. More critically, South Korea's 220V power won't match United States of America's 120V system. That's a 100 volt gap that matters. wikimedia.org/wiki/Special:FilePath/Las%20Vegas%20%28Nevada%2C%20USA%29%2C%20The%20Strip%20--%202012%20--%206232.jpg. Bottom line: pack the right gear or prepare for inconvenience.
- →Uses 12H time format (e.g., 11:00 PM)
- →Temperature measured in Fahrenheit (°F)
- →Electrical system uses 120V at 60Hz with Type A/B plugs
- →Tap water is safe to drink in most areas
- →Airport electronics shops in United States of America charge 3-4x typical adapter prices. Buy before you leave.
- →USB ports are everywhere in US hotels. Consider using those for phones/tablets.
- →Most phone and laptop chargers handle 100-240V automatically (check the fine print on the brick)
What to pack for this route.
One adapter for the plug shape, one converter when voltage bands cross. That covers most of what you need.
A universal adapter covers this route plus 150+ other countries.
Bands differ (220V vs 120V). Hair dryers, curling irons, kettles need a converter — or a dual-voltage replacement.
Every adapter, charger, and travel-safe device we've curated.
The four partners we travel with.
eSIM for landing-day data, VPN for hotel WiFi, insurance for the gear, and a clean airport pickup in United States of America.
Saily eSIM
Activate before you fly so you have data the moment you land in United States of America. No SIM-card hunt at the airport.
NordVPN
Hotel and café WiFi is open and shared. NordVPN encrypts everything — banking, streaming, work — so no one on the same network can snoop.
Ekta Travel Insurance
Cross-border trips have moving parts. Ekta covers electronics, medical, and trip cancellation for United States of America.
Welcome Pickups
Skip the taxi-line negotiation in United States of America. English-speaking driver waits at arrivals with your name on a sign — fixed price.
Related routes, worth a look.
Same origin, same destination, or both — the routes most likely to be relevant if this one is.