In Bangkok, they use Type A, B, C, and O plugs and sockets. The mains voltage is 220 V, and the frequency is 50 Hz.
So, you’ll definitely need a travel adaptor in Bangkok. Their plugs and sockets aren’t the same as our Type G back in the UK.
Key Takeaways
- Plugs and sockets: A, B, C, and O
- Mains voltage: 220 V
- Frequency: 50 Hz
- Travel adaptor needed? Yes, you do need a travel adaptor
- Voltage converter needed? You won’t require a voltage converter here.
- Recommended travel adaptor: AUNNO Universal Travel Adaptor
These details combine official input from electricity authorities, IEC standards, and practical experience from people who’ve travelled internationally.
Sockets in Bangkok
Bangkok uses Type A, B, C, and O plugs and sockets.
Type A

Type A sockets have two flat parallel pins and no grounding. Unlike Type G, they don’t include an earth pin, which makes them less secure.
Type B

Type B sockets have two flat parallel pins plus a round grounding pin. Unlike Type G, the pins are thinner and there’s no built-in fuse.
Type C

Type C sockets have two round pins and no grounding. Unlike Type G, they take a slimmer plug without an earth pin or fuse.
Type O

Type O sockets have two round pins and an additional grounding pin. UK Type G plugs do not fit into Type O sockets.
Recommended Travel Adaptor for Bangkok
Through detailed reviews and real-world testing, we’ve identified the adaptor that best balances safety, speed, durability and price.
Recommended Travel Plug Adaptor
by 1,500+ travellers on Amazon
No adaptor once you’ve landed? Airports and local shops are an option. But nothing beats the peace of mind of having your own ready to use.
Bangkok is often visited alongside Vietnam and Cambodia. Worth having a look at those pages too — plug types and voltage can vary a bit.
Do You Need a Voltage Converter?
A power converter is only required when voltages differ. In Bangkok it’s about the same as at home in Britain, so you can skip it.
Check the mains rating on your device before travelling. A mark of ‘100–240 V, 50/60 Hz’ means it’ll work abroad without any converter.

Top Travel Essentials to Take With You
Sometimes the simplest bits of kit are the most useful. A luggage scale saves your wallet, a power bank saves your battery, and packing cubes save your sanity when you’re digging through your bag. We’ve tested them, and they’ve quickly become our travel staples.