Cook Islands Power Plugs, Wall Sockets & Electrical Outlets
In Cook Islands, power plugs and sockets (electrical outlets) of Type I (AS/NZS 3112, two angled flat pins plus vertical grounding pin, grounded) are used. Wall sockets run at 240V and 50Hz. Check if you need a travel adapter, electrical adapter or voltage converter before travelling to Cook Islands.
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Do you need an adapter for your trip?
Cook Islands uses:
What Plug Type Does Cook Islands Use?
The Cook Islands power plug follows the Australasian standard, known as Type I under the AS/NZS 3112 specification. This plug features two flat pins angled at 30 degrees, along with a vertical flat grounding pin for appliances that require an earth connection. Travelers coming from regions with different AC power plugs and sockets will need an adapter that converts their existing plug top into this three-pin angled configuration before connecting to a local socket-outlet.
Is a Voltage Converter Necessary?
The Cook Islands operates on a 240V, 50Hz electrical system, which matches the standard voltage used in Australia, New Zealand, and the United Kingdom. Visitors from these regions, and from most of Europe and Asia where 220-240V is standard, will not need a voltage converter. However, travelers from countries running on 100-127V systems, such as the United States, Canada, and Japan, should use a voltage converter or transformer for devices that are not dual-voltage, since plugging them directly into a 240V socket-outlet could cause damage.
Grounding and the Earth Pin
Type I plugs used in the Cook Islands include a vertical grounding pin in addition to the two angled flat pins, providing a genuine earth connection for appliances that need one. This grounded design supports a 10A current rating and is suitable for household electronics, power tools, and air conditioning units. Two-pin ungrounded versions of the plug also exist for double-insulated appliances that do not require an earth connection, and the angled pin layout helps maintain correct polarity every time the plug is inserted.
Frequently Asked Questions
Yes, if your home country does not use Type I plugs, you will need a travel adapter to fit the Cook Islands' angled three-pin socket-outlets. This is common for travelers from North America, Europe, and much of Asia.
The Cook Islands uses Type I plugs, the Australasian standard featuring two angled flat pins plus a vertical earth pin, rated at 10A and 220-240V. This is the same plug design used in Australia and New Zealand.
The Cook Islands runs on a 240V, 50Hz electrical supply. This matches many countries in the Pacific, Australasia, and Europe, so travelers from those regions typically don't need a voltage converter.
Pack a Type I plug adapter if your devices use a different plug top, and consider a voltage converter if your appliances aren't rated for 220-240V. Dual-voltage electronics like phone chargers and laptops usually only need the adapter, not a converter.
