Thailand uses plug types A, B and C at 230 V, 50 Hz. Many sockets take US flat pins; the voltage is what catches US travelers out.
The short answer
Thailand uses plug types A, B, C at 230 V, 50 Hz. US plugs fit, so most US travelers need no adapter.
Thailand uses types A, B and C, and many sockets are combined units that take both flat US pins and round European pins. The voltage is 230 V, so the plug fits more often than the device works.
Two flat parallel pins, no ground.
Where else type A is usedTwo flat parallel pins plus a round ground pin.
Where else type B is usedTwo round pins, no ground (the Europlug).
Where else type C is used"Converter" applies only to single-voltage devices. Chargers marked 100-240V need an adapter at most.
| Traveling from | Adapter | Voltage converter |
|---|---|---|
| United States or Canada | Not needed | For 120 V-only devices |
| United Kingdom or Ireland | Type C | Not needed |
| Mainland Europe | Not needed | Not needed |
| Australia or New Zealand | Type C | Not needed |
| Japan | Not needed | For 100 V-only devices |
Two-prong US plugs fit most sockets. This adapter covers three-prong plugs and sockets that don't take flat US pins.
Budget Europe adapter with 2 USB ports for Type C outlets
A universal adapter covers types A, C, G and I. It won't fit Switzerland, India or South Africa well.
Works in 150+ countries with 5 USB ports
Usually not for two-prong plugs. A type C adapter is useful for three-prong plugs and for the sockets that only take round pins.
For single-voltage 120 V devices, yes: Thailand runs at 230 V. Phone, laptop and camera chargers labelled 100-240V don't need one.
Types A, B and C, at 230 V and 50 Hz.
Founder & Editor-in-Chief
Taro spent a decade in the music industry as a tour manager, crisscrossing the globe with artists and crews who demanded gear that actually worked. From overnight buses in the American Midwest to bullet trains in Japan, backstage in London to festival grounds across Europe—he's lived out of bags, cases, and carry-ons for years. That experience taught him what separates travel gear that survives the road from stuff that falls apart after one trip. Now he channels that hard-won knowledge into TravelGiftList, helping travelers find products that meet real-world demands.
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