Quick answer
Americans travelling to Sri Lanka need a plug adapter, not a voltage converter, for nearly everything on a typical packing list. Sri Lanka runs on 230V at type D, type G and type M sockets, compared with the USA's 120V type A and type B, but phones, laptops and most modern electronics are dual-voltage (100-240V) and only need the plug shape changed. A single-voltage US appliance, such as a hairdryer or flat iron without a dual-voltage rating, needs a separate step-down converter, or is better left at home.
Key takeaways
- Sri Lanka uses type D, type G and type M sockets at 230V, compared with the USA's type A and type B sockets at 120V.
- Phones, laptops, tablets and most camera chargers are dual-voltage (rated 100-240V) and need only a plug adapter, not a voltage converter.
- A single-voltage US appliance, such as a hairdryer or flat iron without a 100-240V rating, needs a step-down voltage converter or should stay at home.
- Type G, the UK-style three-pin socket, is common in newer hotels, though type D's three round pins still appear widely, especially in older buildings.
- A universal travel adapter covering types D, G and M is more reliable than a single-type adapter, since socket type can vary within the same hotel.
Why Sri Lankan power is different from the USA
Sri Lanka's electrical system runs on 230 volts at 50Hz, against the USA's 120 volts at 60Hz, and uses entirely different plug shapes. This isn't a small mismatch: plugging a single-voltage 120V US appliance directly into a 230V Sri Lankan socket, even with a shape-only adapter, can damage the device or pose a fire risk.
The good news is that this only matters for a specific category of appliance. Most electronics American travellers actually pack, phones, laptops, cameras and battery chargers, are built to handle both voltages automatically, so the practical fix is usually just a plug shape adapter, not a full converter.
What only needs a plug adapter
Devices with a small external power brick, the block partway along the charging cable, are almost always dual-voltage. Check the fine print on that brick: if it reads something like 'INPUT: 100-240V', the device handles Sri Lankan power fine and only needs its plug shape changed.
This covers the bulk of what American travellers actually bring on a trip. A single well-made universal adapter, rather than a bag of single-purpose ones, is the simplest way to cover every device.
- →Phone and tablet chargers: dual-voltage on virtually every modern model, adapter only.
- →Laptop chargers: check the brick, but almost all read 100-240V, adapter only.
- →Camera battery chargers and portable power banks: dual-voltage in nearly all cases, adapter only.
What actually needs a voltage converter
Voltage converters matter for a narrower category: high-wattage appliances built for a single voltage, most often a US-only hairdryer, flat iron, curling iron or a CPAP machine without a dual-voltage rating. Running one of these on Sri Lankan power with just a plug adapter, and no converter, is where damage or a safety risk actually happens.
The simplest fix for most of these is to leave them at home. Hotels and guesthouses in Sri Lanka, especially in Colombo, Kandy and the main resort areas, commonly provide a hairdryer in the room, and a lightweight travel hairdryer bought locally costs little.
- →Hairdryers, flat irons and curling irons: usually single-voltage; check for dual-voltage or skip and use the hotel's.
- →CPAP machines: check the manufacturer's voltage rating specifically before travel; many medical devices are dual-voltage but not all.
- →Any US kitchen appliance (kettle, blender): almost never dual-voltage; don't bring these at all.
Socket types you'll actually find
Sri Lanka officially uses type D (three round pins in a triangle), type G (the UK's three rectangular pins) and type M (a larger three-round-pin variant), and all three genuinely appear in circulation, sometimes in the same building. Newer hotels tend to favour type G sockets, while older guesthouses and some rural properties still commonly have type D.
A universal adapter that folds or slides between all three types removes the guesswork entirely, and is worth the small extra cost over a single-type adapter bought for one specific plug shape.
Buying an adapter locally versus bringing one
Adapters are easy to find in Colombo, at BIA arrivals shops, in supermarkets and in most tourist-area convenience stores, so forgetting one isn't a crisis. That said, prices and stock vary, and a jet-lagged first evening is not the ideal time to be hunting for one.
Bringing a universal adapter from home, bought cheaply from any US electronics retailer before the trip, is the more reliable option and avoids relying on finding one after a long flight.
Practical packing tips for Americans
Packing power gear for Sri Lanka comes down to a short checklist rather than a long one. Most American travellers need exactly one item: a universal travel adapter covering type D, G and M sockets.
For the fuller US-specific packing list, including clothing, mosquito protection and rain layers, see our dedicated guide linked below.
- →Pack one universal adapter (types D, G, M) rather than several single-shape adapters.
- →Check the voltage rating printed on any appliance's power brick before assuming it's safe to use.
- →Leave single-voltage hairdryers, irons and kitchen appliances at home; use the hotel's or buy locally instead.
Frequently asked questions
What plug adapter do I need for Sri Lanka?
A universal travel adapter covering type D, type G and type M sockets covers everything you're likely to encounter in hotels, guesthouses and airports across Sri Lanka. Buying one before you fly is more reliable than expecting to find the right one on arrival.
Does Sri Lanka use 120V or 230V electricity?
Sri Lanka runs on 230V at 50Hz, unlike the USA's 120V at 60Hz. Most modern electronics such as phones and laptops are dual-voltage and handle this automatically; single-voltage US appliances do not and risk damage without a converter.
Can I use my hairdryer in Sri Lanka?
Only if it's rated dual-voltage (100-240V); check the label on the handle or cord. A single-voltage US hairdryer plugged into Sri Lankan power, even with an adapter, can be damaged or become a safety risk. Most hotels provide one in the room.
Do hotels in Sri Lanka provide adapters?
Some do, particularly larger resorts and hotels used to international guests, but it isn't guaranteed at smaller guesthouses. Bringing your own universal adapter is the safer plan rather than relying on the property to have one available.
What type of plug does Sri Lanka use?
Sri Lanka uses type D, type G and type M sockets, all of which appear in genuine circulation, sometimes within the same building. A universal adapter covering all three removes the need to identify which type you'll find at each stop.
Will my laptop charger work in Sri Lanka?
Almost certainly, since nearly all laptop chargers are dual-voltage (100-240V); check the input rating printed on the charger's power brick to confirm. You'll only need a plug shape adapter, not a separate voltage converter, for the charger itself.
Do I need a voltage converter for my phone charger?
No, in almost all cases. Phone chargers are built dual-voltage (100-240V) as standard, so a plug shape adapter alone is enough for a phone, tablet or most camera chargers travelling from the USA to Sri Lanka.