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The short answer
Checked 23 October 2026 against the IEC World Plugs list. Cambodia is 230 volts at 50 Hz, and the plug types on that list are A, C, and G. Type A is two flat parallel pins. Type C is two round pins. Type G is the three rectangular pins used in the UK. Type B, Type E, Type F, and Type I are not on Cambodia's row.
From the same list, the United States and Canada are 120 volts, 60 Hz, types A and B, so those visitors need an adapter, and a 120-volt-only device needs a converter or stays home. The UK (230 volts, 50 Hz, Type G), France (C and E), Germany (C and F), and Australia (Type I) are already at 230 volts and 50 Hz. Only the plug shape is in question. IEC has no row labeled "EU."
Clothes and the temple dress code are on the Siem Reap packing list. The rest of the trip starts at the plan page.
What you'll find in Siem Reap hotels
Many hotels have a universal socket, and some rooms have only one of the three types. Do not count on universal. IEC lists the country, not the socket beside the bed.
Bring one adapter that takes your home plug and can meet Type A, Type C, and Type G. A universal model with USB-C ports charges the phone when the brick stays in the bag. See universal USB-C travel adapters on Amazon.
From the US or Canada, the narrower match is an adapter that takes Type A or Type B and presents Type A, C, or G. That follows the two IEC rows. It does not make a 120-volt-only device safe on 230 volts. See US to Type A, C, and G adapters on Amazon.
Adapter vs voltage converter
An adapter changes pin shape. A converter changes voltage. Read the brick. If the input includes 230V, often as 100–240V, the adapter is enough. Phone, camera, and laptop chargers are often in that group. A single voltage other than 230 does not belong on a Cambodian socket through an adapter alone.
Hair dryers are the usual problem. A single-voltage dryer made for about 120 volts should stay home. A small converter is a poor way to run a heating element. If you want one in the room, bring a dual-voltage travel dryer labeled for both sides, such as 110–240V, and use the same plug adapter. See dual-voltage travel hair dryers on Amazon.
Guesthouse rooms are short on sockets. A compact multi-port USB-C GaN charger in the 65W class runs a phone and a laptop from the one outlet you can reach. See compact 65W GaN USB-C chargers on Amazon.
Adapter by home country
Home rows are the IEC entries, checked 23 October 2026, against Cambodia's 230V, 50 Hz, types A, C, and G. The EU line is France and Germany only, not every European country.
| Traveling from | At home (IEC) | What you need in Cambodia |
|---|---|---|
| US and Canada | 120V, 60 Hz, types A and B | An adapter. Two-pin Type A can meet a Type A socket. Type B cannot. Dual-voltage gear needs only the adapter. A 120V-only heat tool needs a converter or stays home. |
| United Kingdom | 230V, 50 Hz, Type G | No converter. A UK plug fits Type G only. Bring an adapter for Type A or Type C sockets. |
| EU (France and Germany) | France: 230V, 50 Hz, C and E. Germany: 230V, 50 Hz, C and F. | No converter. Two-pin Type C fits. Grounded Type E and Type F are not on Cambodia's list. |
| Australia | 230V, 50 Hz, Type I | An adapter. Type I is not a Cambodian type. No converter for gear already rated 230V. |
Power banks and flying
Follow the FAA page for airline passengers and batteries, checked 23 October 2026 (FAA update 2 October 2026). Spare power banks must ride in the cabin and cannot be checked. If the gate takes your bag, keep the bank with you. Up to 100 watt-hours is allowed for your own use. From 101 to 160 watt-hours you need airline approval, and only two of those spares. Over 160 watt-hours is forbidden. Your carrier may be stricter. The airport guide is the SAI transfer, not this limit.
Read the watt-hours printed on the bank. If the label shows only milliamp-hours, the FAA method is volts times amp-hours after you divide by 1,000. A label of 3.7 volts and 10,000 mAh is 37 watt-hours. A 10,000 mAh USB-C bank covers a temple day when that figure is at or under 100. See 10,000 mAh USB-C power banks on Amazon.
The FAA PackSafe lithium-battery page, checked the same day, says the terminals must be protected from a short and names a pouch as one way. See small tech pouches on Amazon.
Charging on temple days
The phone is the camera, the map, and the pass. The online Angkor Pass is a QR code, so the Angkor Pass guide says to screenshot it before the gates, where signal is patchy. Sunrise keeps the screen on from the tuk-tuk onward. Timing is in the sunrise guide. Leave with a full charge and the power bank in the daypack.
The packing list says to bring a power bank and skips the plug and the voltage. Charge overnight through the adapter once the bricks are dual-voltage.
Other tech worth packing
A SIM and an eSIM are a different choice from power. The Cambodia SIM card guide covers the carriers, the passport rule, and when an eSIM beats the airport kiosk. Neither one charges the phone. You still need the adapter.
Pack a short cable. A one-foot USB-C lead reaches a low socket and a power bank in a tuk-tuk. If the phone uses Lightning, bring that short lead too. See short USB-C cables on Amazon. See short Lightning cables on Amazon. More practical reading is under Guides.
FAQ
What plug does Cambodia use?
Types A, C, and G, on the IEC World Plugs list checked 23 October 2026. A is two flat pins, C is two round pins, and G is the UK plug. Types B, E, F, and I are not listed for Cambodia.
What voltage does Cambodia use?
230 volts at 50 Hz, on the IEC World Plugs list checked 23 October 2026. The US and Canada are 120 volts at 60 Hz. The UK, France, Germany, and Australia are 230 volts at 50 Hz.
Do I need an adapter from the US?
Yes. IEC lists the US and Canada at 120 volts, 60 Hz, types A and B, and Cambodia at 230 volts, 50 Hz, types A, C, and G (checked 23 October 2026). Two-pin Type A can meet a Type A socket. Type B cannot. If the charger label includes 230V, an adapter is enough. A 120-volt-only tool needs a converter or stays home.
Do I need an adapter from the UK?
Bring one unless the socket is Type G. The UK is 230 volts, 50 Hz, Type G on the IEC list (checked 23 October 2026), so voltage matches and a UK plug fits Type G only. It does not fit Type A or C, and a room can have any of the three.
Can I use my hair dryer in Cambodia?
Only if it accepts 230 volts. An adapter does not change voltage. A dryer built only for about 120 volts should stay home. A dual-voltage dryer labeled 110-240V needs the plug adapter alone. Cambodia is 230 volts, 50 Hz (IEC, checked 23 October 2026).
Can I bring a power bank on the flight to Siem Reap?
Yes, in the cabin, for your own use, inside the FAA limit. The FAA passenger battery page, checked 23 October 2026 (updated 2 October 2026), says spare power banks must be carried on, not checked. Up to 100 watt-hours is allowed. 101 to 160 needs airline approval, two spares each. Over 160 is forbidden. Read the label. The airline may be stricter.
Do plugs from Europe or Australia work in Cambodia?
Do not count on it. IEC lists France at 230 volts, 50 Hz, types C and E, Germany at 230 volts, 50 Hz, types C and F, and Australia at 230 volts, 50 Hz, Type I (checked 23 October 2026). Voltage matches. Two-pin Type C fits. Type E, Type F, and Australian Type I are not on Cambodia's row.
Plug, voltage, and battery figures were checked on 23 October 2026. Airlines can be stricter than the FAA pages above. Read the label on the charger and the power bank.