US to UK plug adapter guide
Type G sockets, 230V power, and when you need a converter — not just an adapter. Travelling from the US to the UK, you need a Type G plug adapter for the socket shape — the US runs on 120V/60Hz and the UK on 230V/50Hz, but most modern chargers are dual-voltage (100–240V), so a separate voltage converter usually isn't required.Quick answer Plug: The UK uses Type G (three rectangular pins). US Type A/B plugs need a travel adapter. Voltage: The US is about 120V; the UK is 230V. Dual-voltage chargers (100–240V) usually need only an adapter. Frequency: The US uses 60Hz and the UK 50Hz. Fine for most electronics; check motor-driven devices.
| US | UK | |
|---|---|---|
| Plug type | Type A/B | Type G |
| Voltage | 120V | 230V |
| Frequency | 60Hz | 50Hz |
| Converter needed? | Usually not for dual-voltage (100–240V) devices | |
We've lived on both sides of this route ourselves — Type G adapters are cheap and small enough to keep one in every bag, and it's the one piece of kit we never travel without.
Why are US and UK plugs different?
American homes use Type A or B flat-pin plugs at about 120V / 60Hz. The United Kingdom uses Type G at about 230V / 50Hz. A travel adapter fixes the shape only — not a device marked 120V only.
Type G: the UK plug
Type G has three rectangular pins with an earth pin at the top. Buy a dedicated US to UK or Type A/B to Type G adapter — generic “Europe” kits with round pins (C/F) will not fit UK sockets.
Type G is also used in Ireland, Hong Kong, Singapore, and several other countries — confirm each stop in our checker.
Do I need a voltage converter for the UK?
Read the label on your charger or appliance. INPUT: 100–240V means you typically need only a plug adapter. 120V only means you need a suitable converter or should leave the device at home.
What to pack
- One solid Type G adapter per traveller
- A voltage converter only for confirmed 120V-only gear — match wattage to the appliance
- Consider dual-voltage travel versions of high-draw items instead of converting
Our recommended adapter for this route
The VINTAR US to UK adapter 2-pack is what we'd pack for this route. It covers Type G sockets (UK, Ireland, Hong Kong, Dubai, Kenya), includes 2 outlets and 4 USB ports including USB-C, and coming as a 2-pack means one for the bag and one for the hotel nightstand.
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What if I forget my adapter?
Adapters are widely sold at UK airports, electronics shops, and convenience stores near hotels and tourist areas — usually at a small markup over what you'd pay at home. If you're stuck, ask at your hotel front desk; many keep a few spares to lend.
Check your route in seconds
Open the PlugsRus.net checker with your countries pre-selected. Our database lists plug types, voltage, and frequency for 200+ destinations.
Check United States → United Kingdom in the tool.
Open the plug checkerCommon questions
Can I use my iPhone charger in the UK?
Yes — Apple USB adapters accept 100–240V. You only need a Type G plug adapter for the brick.
Is Ireland the same as the UK for plugs?
Republic of Ireland also uses Type G at 230V, but select Ireland separately in our tool if that is your destination.
More travel guides
Disclaimer
This article is general travel information, not electrical advice. Always read device labels and consult the manufacturer for medical or high-wattage equipment. Data is aligned with the IEC World Plugs reference.