For: travelers bringing phones, laptops or personal appliances to Korea. Checked: 9 November 2026. Always check the label and manufacturer instructions for your exact device.
Check voltage before buying an adapter
Korea’s standard household supply is 220 volts at 60 Hz, with outlets commonly having two round holes, according to Korea Tourism Organization. A travel plug adapter changes the plug shape; it does not necessarily convert voltage. A device whose input rating does not cover 220 V needs a compatible solution recommended by its manufacturer, or should be left unplugged.
| Label | What to check |
|---|---|
| Input 100–240 V, 50/60 Hz | The marked range covers Korea’s standard supply. Check plug fit, grounding and the manufacturer’s instructions. |
| Input 110–120 V only | Do not connect directly to a 220 V outlet through a simple plug adapter. Ask the manufacturer for a suitable solution. |
| No label | Do not guess. Check the manual or official device support before use. |
| Loose plug | Use an appropriate correctly rated adapter; never force a plug. |
Read the right part of the charger
Look for INPUT on the power brick, not only the USB output. Input describes the supply the charger accepts. The voltage range and frequency must cover the local supply; confirm any additional requirements with the manufacturer. For a product-specific example, see Philips’ travel guidance.
For example, a charger marked “Input 100–240 V ~ 50/60 Hz” has a voltage and frequency range that includes Korea’s 220 V and 60 Hz. That example does not certify a particular adapter, cable or appliance.
High-power devices need extra care
Hair dryers, curling irons and travel kettles can draw much more power than a phone charger. Check the appliance’s actual input rating and manufacturer instructions. If a compatible converter is needed, its output, wattage and other specifications must suit the device; an ordinary plug adapter alone is not a voltage converter. If you cannot establish compatibility, ask the accommodation about an available appliance or leave yours unused.
A socket’s shape does not itself guarantee grounding. If a device requires a protective earth connection, use a compatible grounded setup consistent with its instructions. Stop using any adapter that is damaged, loose, overheating or visibly unsafe.
At your accommodation
Ask 어댑터를 빌릴 수 있나요? — Can I borrow an adapter? KTO notes that some hotel front desks may lend or sell adapters; availability and fit vary. For overnight charging, follow the device and accommodation instructions rather than covering chargers or placing them on soft bedding.
Keep a separate plan for power banks on your flight: airline cabin and battery rules are a different issue from using a wall outlet. Read our Incheon power-bank guide before departure.