Asia · plug & voltage guide
Thailand plug type and voltage
Thailand uses Types A, B, C and O outlets at 230 V and 50 Hz. Some outlets in Thailand take U.S. plugs, but others are Types C and O. Pack a Type C adapter or a universal adapter to be safe.
Verified Oct 17, 2026By Steven MoHow we check Report a correction
All are used; check your hotel
U.S. outlets: 120 V
U.S.: 60 Hz
Check your devices
Quick answer
Thailand uses Types A, B, C and O at 230 V. Some outlets in Thailand take U.S. plugs, but others are Types C and O. Pack a Type C adapter or a universal adapter to be safe. 230 V is about twice the 120 V of the United States. Chargers marked 100–240 V (phones, laptops, cameras) only need an adapter; single-voltage devices such as hair dryers and straighteners need a converter, or bring dual-voltage ones.
- Plug types
- Type A, Type B, Type C, Type O
- Voltage and frequency
- 230 V, 50 Hz
- Adapter from the U.S.
- Sometimes
- Converter
- Check your devices
Do I need a plug adapter?
- Plugs
- Types A, B, C and O
- Voltage
- 230 V
- Frequency
- 50 Hz
Some outlets in Thailand take U.S. plugs, but others are Types C and O. Pack a Type C adapter or a universal adapter to be safe.
230 V is about twice the 120 V of the United States. Chargers marked 100–240 V (phones, laptops, cameras) only need an adapter; single-voltage devices such as hair dryers and straighteners need a converter, or bring dual-voltage ones.
The outlets you'll find in Thailand
Many outlets accept both flat U.S.-style pins and round European pins, but the voltage is 220 V.
Type A
Two flat parallel pins
Not grounded · also used in U.S., Canada, Mexico, Japan
Type B
Two flat pins and a round grounding pin
Grounded · also used in U.S., Canada, Mexico
Type C
Two round pins (the Europlug)
Not grounded · also used in most of Europe, South America and Asia
Type O
Three round pins in a triangle
Grounded · also used in Thailand
What to pack for Thailand
- A Type C plug adapter, or a universal adapter for older outlets, one per device you charge at the same time.
- Dual-voltage hair tools, or a voltage converter if yours are 120 V only.
- Leave U.S. power strips at home: most are rated for 125 V, not 230 V.
Check the label first
Look for the input line on your charger or device. INPUT: 100–240V means it works anywhere with just a plug adapter. A single number such as 120V means it only works at that voltage.
Plugs in other Asia destinations
- AfghanistanC, F · 220 VType C
- ArmeniaC, F · 230 VType C
- AzerbaijanC, F · 220 VType C
- BangladeshA, C, D, G · 220 VSometimes Type C
- BhutanC, D, F, G, M · 230 VType C
- BruneiG · 240 VType G
- CambodiaA, C, G · 230 VSometimes Type C
- ChinaA, I · 220 VSometimes Type I
- GeorgiaC, F · 220 VType C
- Hong KongG, D, M · 220 VType G
- IndiaC, D, M · 230 VType D
- IndonesiaC, F · 230 VType C
- JapanA, B · 100 VNo adapter
- KazakhstanC, F · 230 VType C
- KyrgyzstanC, F · 220 VType C
- LaosA, B, C, E, F · 230 VSometimes Type C
- MacauG, D, M · 230 VType G
- MalaysiaC, G, M · 230 VType C
- MaldivesD, G, J, K, L · 230 VType D
- MongoliaC, E, F · 220 VType C
- MyanmarA, C, D, F, G, I · 230 VSometimes Type C
- NepalC, D, M · 230 VType D
- North KoreaC, F · 220 VType C
- PakistanC, D, G, M · 230 VType C
- PhilippinesA, B, C · 230 VSometimes Type C
- SingaporeC, G, M · 230 VType C
- South KoreaC, F · 220 VType C
- Sri LankaD, G, M · 230 VType D
- TaiwanA, B · 110 VNo adapter
- TajikistanC, F, I · 220 VType C
- Timor-LesteC, E, F, I · 220 VType C
- TurkmenistanB, C, F · 220 VSometimes Type C
- UzbekistanC, E, F · 220 VType C
- VietnamA, B, C, F · 220 VSometimes Type C
Thailand plug FAQ
Thailand uses Types A, B, C and O. Many outlets accept both flat U.S.-style pins and round European pins, but the voltage is 220 V.
Sources
Last verified Oct 17, 2026. Plug types and voltages rarely change, but hotels sometimes have older or international outlets.
- IEC: World Plugs, plug types and voltages by country
- Wikipedia: Mains electricity by country (compiled from IEC data)
Read how we collect and check this data, or tell us if something's out of date.
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