Travel adapter from Costa Rica to New Zealand
Adapter Required
Yes — coming from Costa Rica, you will need a travel adapter for New Zealand. Costa Rica uses Type A/Type B plugs, and New Zealand uses Type I, so the pin shapes will not fit any wall socket. Voltages differ (120 V at home vs 230 V abroad), so check the label on each device. Most modern dual-voltage chargers handle the swing without a converter, but heating appliances usually do not. The mains frequency is also different (60 Hz vs 50 Hz). This rarely matters for electronics but can affect motor-driven devices like clocks and shavers.
Costa Rica (home)
New Zealand (destination)
Electrical specs
More about plugs in New Zealand
In New Zealand, the standard power plug is Type I. The country runs on 230 volts at 50 Hz. That means every wall socket in New Zealand is the same shape — Type I, and your plug needs to physically match the socket to fit.