Korea Travel Voltage & Outlet Guide | When Do You Need a Plug Adapter or Voltage Converter? A Checklist by Item
Voltage and Power Outlet Tips for Traveling to Korea｜When Do You Need a Plug Adapter or Voltage Converter? An Item-by-Item Checklist
🔌 Simply checking the power specifications on your belongings once can prevent almost all problems at your destination
Brought to you by YEPPURIKO.
🎯 One Thing to Check Before Traveling to Korea
One thing that is easy to overlook when preparing for a trip to Korea is the voltage around power outlets.
Korea’s voltage is 220V. Japan uses 100V, so plugging electrical appliances in directly may risk damaging them.
However, the solution is simple.
If you understand the difference between a “plug adapter” and a “voltage converter,” you can prevent almost all problems while in Korea. This guide explains what you need for smartphones, hair irons, and hair dryers.
You can determine whether you need a voltage converter by checking the power specifications of the items you bring.
📱 Smartphones and computers are fine without a voltage converter
Most smartphone and computer chargers support “100-240V.”
Check the “INPUT” label printed in small letters on the charger itself or on the included adapter.
✅ What to check
If the charger says “INPUT 100-240V,” you do not need a voltage converter.
All you need is a “plug adapter” to match the shape of the outlet.
Korean outlets have two round holes (Type C), the same shape as European-standard outlets.
Japanese plugs cannot be inserted directly, so be sure to bring at least one plug adapter.
⚠️ Check your hair iron before bringing it
Many Japanese-made hair irons are models designed exclusively for 100V.
If the device only says “100V,” using it as is in Korea may pose a risk of malfunction or overheating.
✅ Check the label on the device
표시 “100-240V” → A plug adapter alone is enough
“100V” only → A voltage transformer is also required
Voltage transformers are bulky and heavy, so keeping one overseas-compatible model for travel may be more convenient in the long run.
💨 Hair dryers are generally available at hotels
Hotels in Korea generally provide hair dryers.
In most cases, there is little need to prepare a voltage transformer and bring your own hair dryer.
If you want to reduce your luggage, it is practical to rely on the hair dryer provided locally.
🔎 If you forget to bring a plug adapter
Even if you forget to bring a plug adapter, there is no need to panic.
✅ What to do locally
If you ask the hotel front desk, they can often lend you one.
In Korean, saying “돼지코 (デジコ)” will get the message across. Literally meaning “pig’s nose,” it is a unique name derived from the shape of the plug.
Before departing from Japan, you can easily purchase one at DAISO or an electronics retailer.
☕ Korea has plenty of charging spots around the city
Even when you are worried about your battery while out and about, Korea offers a relatively convenient environment for dealing with such situations.
Cafes often have electrical outlets and USB ports near the seats, and free charging areas are also becoming more common on subway platforms and at some bus stops.
If you bring one plug adapter, you can charge your devices in these places as well, giving you greater peace of mind during your trip.
❓ Frequently Asked Questions
Q. Are the electrical outlets and voltage in Korea different from those in Japan?
Korea uses 220V electricity and Type C outlets (the European standard with two round holes). Japan uses 100V and has different outlet shapes, so a plug adapter is required.
Q. Do I need a plug adapter or a voltage converter?
In many cases, a plug adapter alone is sufficient. If the “INPUT” label on your charger or iron says “100-240V,” you only need a plug adapter. If it only says “100V,” you will also need a voltage converter.
Q. Can I buy a plug adapter locally?
It may be difficult to purchase one locally. For peace of mind, buy one at Daiso or an electronics retailer before leaving Japan, or make use of the loaner service at your hotel’s front desk.
Q. Should I bring a hair dryer?
Hotels in Korea generally provide hair dryers, so in most cases, you should be fine without bringing one. Using the hotel’s hair dryer is also recommended if you want to reduce your luggage.
✨ Summary: Checklist Before Traveling to Korea
☑ Prepare one plug adapter (Type C)
☑ Check whether the “INPUT” label on your smartphone and PC chargers says “100-240V”
☑ If bringing a hair iron, check the voltage supported by the device (a transformer is required if it supports only “100V”)
☑ Leave the hair dryer to the hotel (generally provided)
☑ If you forget your plug, try asking the hotel front desk for “돼지코 (Daejiko)”
Preparing for voltage and outlets when traveling to Korea can be completed simply by bringing one plug adapter and checking the labels on your belongings. That alone can prevent almost all problems at your destination.
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Once you have prepared your outlet adapter, let’s check all your belongings next.
→ YEPPURIKO blog also shares checklists of things to bring on a trip to Korea and information on recommended spots in Seoul.
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