Which plug adaptor do I need when travelling from Hong Kong to Korea, South?

Summary

The table below summarises the plug types, voltage and frequency of electrical current in both Hong Kong and Korea, South.

	Hong Kong	Korea, South
Plug Types	G, D, M	C, F
Voltage	220V	220V
Frequency of electrical current	50Hz	60Hz

In Hong Kong there's more than one plug type in use.

What type of plug does your appliance have?

In Korea, South there's more than one socket type in use. You may require more than one adaptor.

Socket Type G
(Hong Kong) to Plug Type C
(Korea, South)

Socket Type G
(Hong Kong) to Plug Type F
(Korea, South)

In Korea, South there's more than one socket type in use. You may require more than one adaptor.

Socket Type D
(Hong Kong) to Plug Type C
(Korea, South)

Socket Type D
(Hong Kong) to Plug Type F
(Korea, South)

In Korea, South there's more than one socket type in use. You may require more than one adaptor.

Socket Type M
(Hong Kong) to Plug Type C
(Korea, South)

Socket Type M
(Hong Kong) to Plug Type F
(Korea, South)

The frequency of electrical current found in Hong Kong (50Hz) differs to that found in Korea, South (60Hz).

Most equipment is not affected by differences in frequencies. Some exceptions are:

Electric clocks: Some electric clocks use the frequency of electrical current to measure time. If the clock is designed for one frequency, but used with another, time shifts could be experienced.
Appliances using motors: If there is a motor load associated with an appliance, the frequency governs the speed in revolutions of the motor. This could mean that the motor will spin faster, or slower than intended and could have a detrimental effect in the appliance's operation. This is of particular concern in power tools and other machinery that uses motors, so if you must use these, you should seek access to a frequency converter.

The voltage found in Hong Kong and Korea, South is exactly the same (220V). You will not need a transformer.