Are you planning to visit the Cook Islands? Check if you need a power plug adapter or voltage converter for the power sockets (outlets) used on the Cook Islands.
The following information is for travelers living in the United States of America.I live in another country.
- You need a power plug adapter on the Cook Islands, when living in the United States of America.
- You also need a voltage converter.
- Be extra careful with certain appliances because of the difference in frequency.
Below you find pictures of the applied power sockets and corresponding plugs. And we provide more information about the voltage and frequency.
Electricity on the Cook Islands
On the Cook Islands the power plug sockets are of type I. The standard voltage is 240 V and the frequency is 50 Hz.
Power plug adapter needed on the Cook Islands?

Voltage converter needed on the Cook Islands?
On the Cook Islands the standard voltage is 240 V and the frequency is 50 Hz.
- You can’t use your electric appliances on the Cook Islands without a voltage converter, because the standard voltage on the Cook Islands (240 V) is higher than in the United States of America (120 V).
You can seriously damage your appliances. You need a voltage converter on the Cook Islands! You can find voltage converters at Amazon. Because you also need a power plug adapter, you should consider a combined plug adapter/voltage converter.
Also the frequency on the Cook Islands (50 Hz) differs from the frequency in the United States of America (60 Hz). You should use a voltage converter which also changes the frequency, but these are hard to find. If your converter can’t change the frequency, be warned! Be especially careful with moving, rotating and time related appliances like clocks, shavers and electric fan heaters.
To be sure, check the label on the appliance. Some appliances never need a converter. If the label states ‘INPUT: 100-240V, 50/60 Hz’ the appliance can be used in all countries in the world. This is common for chargers of tablets/laptops, photo cameras, cell phones, toothbrushes, etc.