Cayman Islands uses the same plug type and a similar voltage to the US — no adapter needed.
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| Plug types | A, B |
| Voltage | 120V |
| Frequency | 60Hz |
| US standard | Type A/B, 120V, 60Hz |
Type A (flat parallel pins, ungrounded (US/Canada/Japan style)), Type B (flat parallel pins plus a round ground pin (US/Canada style)).
Cayman Islands uses Type A (flat parallel pins, ungrounded (US/Canada/Japan style)), Type B (flat parallel pins plus a round ground pin (US/Canada style)).
No — Cayman Islands uses the same plug shape as the US, so a standard US plug fits without an adapter.
Cayman Islands runs on 120V at 60Hz, close enough to the US standard of 120V that most devices work fine.
Most modern electronics (phone and laptop chargers) are dual-voltage (100-240V) and only need a plug adapter, not a converter. Single-voltage, high-wattage devices like hair dryers or straighteners may need an actual voltage converter — check the label near the plug prongs for the input voltage range.