Johnston Atoll Travel Adapters
Johnston Atoll is an unincorporated territory of the United States located in the central Pacific Ocean. It has no permanent civilian population and is primarily managed as a wildlife refuge. Travelers may encounter Type A or Type B outlets. Using a compatible or universal travel adapter is recommended.
The electrical system on Johnston Atoll operates at 120 volts with a frequency of 60 hertz.
Power Plug and Travel Adapter Types Used on Johnston Atoll
Click images for adapter details
Adapter types are listed because they have been found on Johnston Atoll at some point. No plug type is excluded due to age, rarity, partial use, or declining presence.