PlugVoltage

United States to United Kingdom Power Adapter Guide

United States runs 120⁠V and United Kingdom runs 230⁠V. You need a Type G plug adapter; check each input label before connecting; a converter is not suitable for every appliance.

Caution: United States runs 120V and United Kingdom runs 230V. A plug adapter changes the shape, not the voltage — a mismatched appliance must not be connected directly. High-power heating appliances should be replaced with a suitable local model; check both manufacturers before considering a converter.

United States (120⁠V) vs United Kingdom (230⁠V) at a glance

SpecUnited StatesUnited Kingdom
Voltage120⁠V230⁠V
Frequency60⁠Hz50⁠Hz
Plug typesType A/BType G

Your United States devices in United Kingdom

Hair Dryer No MacBook Pro Charger (USB-C Power Adapter) Adapter Only CPAP Machine Check Label iPhone Charger Adapter Only
Next step

What to do next

Check one device in United KingdomUse your exact device label for United Kingdom, not just the route average.Build a United Kingdom trip packSave several devices, adapter needs, and converter/no-go warnings together.Adapter vs converterAvoid the common mistake: plug shape does not change voltage.

The adapter we recommend

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Get a United States→United Kingdom adapter(opens in new tab)

Safety check: a plug adapter only changes plug shape. It does not convert voltage, so confirm your device label before buying.

Shopping links never change the safety verdict.

Best travel adapters for United Kingdom →

FAQ

Do United States plugs work in United Kingdom?

No — United States Type A/B plugs don't fit United Kingdom Type G sockets. You need a plug adapter.

Will my United States hair dryer work in United Kingdom?

For the typical United States single-voltage model: do not use it on this supply or buy a travel converter as a workaround. Choose a local-voltage model or a travel model explicitly rated for this supply. United Kingdom is 230⁠V. Confirm frequency and any voltage selector before connecting.

Is the voltage different between United States and United Kingdom?

United States is 120V and United Kingdom is 230V. That difference matters for single-voltage devices.

Power outlets in United Kingdom · Adapter vs converter

Guidance only — not professional electrical advice. Always confirm against your device's label before plugging in. Local wiring (especially in hotels and older buildings) can vary.