Can I Use My Hair Straightener (Flat Iron) in Thailand?
You'll need a converter.
This country's voltage is different from what your device is built for, but the plug shape matches. Do not plug in directly. You need a voltage converter (transformer) rated above your device's wattage. Using the device without one can damage it or create a fire or shock hazard.
Based on a typical single-voltage US model — confirm your device's label to be sure.
The short answer
A US 120V single-voltage straightener on 230V power overheats and can scorch hair or fail. Confirm "100–240V" on the plate, or carry a dual-voltage travel model. Frequency does not affect heating.
Thailand runs 230V at 50Hz. Thailand runs 230V at 50Hz but its sockets often accept US-style Type A/B plugs — a dangerous false familiarity. The plug may fit, but a US single-voltage device will still overheat on 230V.
Hair Straightener (Flat Iron) in Thailand at a glance
| Device voltage profile | varies |
|---|---|
| Typical wattage | 25–90W |
| Destination voltage | 230V (230–230V) |
| Destination frequency | 50Hz |
| Destination plug types | Type A, B, C, O |
| Voltage mismatch | 120V → 230V = +110V |
| Verdict | Voltage converter needed |
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FAQ
Will a travel adapter let me use my hair straightener (flat iron) in Thailand?
No. A travel adapter only changes the plug shape — it does not change voltage. Your hair straightener (flat iron) would still receive 230V.
Do I need a voltage converter for a hair straightener (flat iron) in Thailand?
Yes — your device runs on a single voltage that doesn't match Thailand's 230V.
What plug type does Thailand use?
Thailand uses Type A, B, C, O sockets at 230V / 50Hz.
Adapter vs converter explained · Best converter for a hair straightener (flat iron)
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.