Quick answer
Sri Lanka uses 230 volts at 50 hertz. The most common socket is Type D, with three large round pins, alongside Type G, the UK-style three rectangular pin socket, and occasionally Type M. Bring a universal travel adapter that covers Type D and Type G. UK plugs fit Type G sockets directly but not Type D. Most modern phone, laptop and camera chargers handle 230 volts without a converter, but check the label on anything with a heating element. Power cuts occur, so a power bank is worth carrying.
Key takeaways
- Sri Lanka runs on 230 volts at 50 hertz.
- Type D, with three large round pins, is the most common socket type.
- Type G, the UK three-rectangular-pin socket, is also widespread in newer buildings and hotels.
- Most modern chargers are dual voltage and need only an adapter, not a converter.
- Power cuts occur; a power bank and a torch are worth carrying.
Voltage and frequency
Sri Lanka supplies 230 volts at 50 hertz, the same as the United Kingdom, most of Europe, India, Australia and much of Asia. Travellers from those regions need only a plug adapter.
Travellers from the United States, Canada, Japan and other 100 to 127 volt countries need to check each device. Almost all modern phone chargers, laptop power supplies, camera chargers and electric shavers are dual voltage, marked on the plug or brick as 100 to 240 volts, and will work on an adapter alone. Anything with a heating element, such as a hairdryer, straightener or travel kettle, frequently is not, and plugging a 110 volt hairdryer into 230 volts will destroy it, occasionally spectacularly.
- →230 volts, 50 hertz, matching the UK, Europe, India and Australia.
- →Check device labels for 100 to 240V, which means dual voltage.
- →Phone, laptop and camera chargers are almost always dual voltage.
- →Hairdryers, straighteners and kettles often are not. Check before plugging in.
The socket types you will meet
Type D is the most common and the one that catches people out. It takes three large round pins arranged in a triangle, and it is the old Indian standard still used widely across Sri Lanka, particularly in older buildings, guesthouses and rural areas.
Type G, the familiar UK socket with three rectangular pins, is increasingly common in newer construction and in most hotels of any standard, a legacy of British electrical standards. Type M, which resembles Type D but with substantially larger pins, appears occasionally, usually on higher-current appliances.
Many sockets in Sri Lanka are hybrid or multi-standard, accepting several pin configurations, and many hotel rooms now include a USB port. None of that is reliable enough to travel without an adapter.
- →Type D: three large round pins in a triangle. The most common type.
- →Type G: UK-style three rectangular pins. Common in hotels and newer buildings.
- →Type M: like Type D but with larger pins; occasionally encountered.
- →Hybrid multi-standard sockets and USB ports are increasingly common but not universal.
Which adapter to bring
Bring a universal travel adapter that explicitly covers Type D and Type G. This is the single answer for every nationality and it removes the guesswork. Buy it before you travel; adapters are available in Sri Lanka but finding one at ten o'clock at night in a rural guesthouse is not the way to start a holiday.
Bring two if you travel with a partner, or bring one adapter and a small multi-socket extension lead, which is the trick experienced travellers use: one adapter into the wall, then four devices into the extension. Hotel rooms in Sri Lanka frequently have fewer accessible sockets than you have devices, particularly in older properties.
- →A universal adapter covering Type D and Type G is all you need.
- →Buy it before you travel rather than hunting for one on arrival.
- →One adapter plus a small multi-socket extension lead beats two adapters.
- →UK visitors: your plugs fit Type G directly, but still bring an adapter for Type D.
Power cuts and reliability
Sri Lanka has experienced scheduled and unscheduled power cuts during periods of generation and fuel difficulty, and while supply is generally stable, interruptions still occur, particularly during storms. Most hotels above the budget level have generators, though these often power only lights and fans rather than every socket.
The practical response is small: carry a power bank, keep devices charged rather than running them flat, and have a head torch or phone torch accessible. Both are useful for pre-dawn starts at Sigiriya, Adam's Peak and safari gates anyway.
- →Interruptions occur, particularly during storms; supply is generally stable.
- →Hotel generators often power lights and fans but not all sockets.
- →Carry a power bank and charge devices before they run flat.
- →A head torch is useful for power cuts and for pre-dawn starts.
Surge protection and charging habits
Voltage fluctuation and surges after an outage restores are a genuine risk to sensitive equipment. If you are travelling with expensive camera gear or a laptop you depend on, a small surge-protected adapter or travel surge strip is a sensible precaution.
Some older sockets are loose and plugs can sit poorly, particularly with heavy adapters. Support the weight of a large adapter rather than letting it hang, avoid leaving devices charging unattended overnight in older buildings, and switch sockets off at the wall when not in use, as most Sri Lankan sockets have switches.
- →Consider a surge-protected adapter for laptops and camera gear.
- →Support heavy adapters rather than letting them hang from loose sockets.
- →Most sockets have switches; turn them off when not in use.
- →Avoid leaving devices charging unattended overnight in older buildings.
Charging on the road
Trains do not reliably offer power, and the hill country services in particular have no usable sockets. Long-distance buses generally have none. If you rely on a phone for navigation, photography or tickets, a power bank is essential rather than optional on travel days.
Private vehicles almost always have a USB or 12 volt socket, and a driver-guide will usually be happy for you to charge on the move. Bring the cable rather than expecting one to be available.
Frequently asked questions
What plug type does Sri Lanka use?
Primarily Type D, with three large round pins in a triangle, alongside Type G, the UK-style three rectangular pin socket, which is common in hotels and newer buildings. Type M, similar to Type D but with larger pins, appears occasionally. Bring a universal adapter covering D and G.
What voltage is used in Sri Lanka?
230 volts at 50 hertz, the same as the United Kingdom, most of Europe, India and Australia. Travellers from those regions need only a plug adapter. Visitors from 110 to 127 volt countries should check each device for a 100 to 240V dual voltage marking.
Do UK plugs work in Sri Lanka?
In Type G sockets, yes, they fit directly, and these are common in hotels and newer buildings. They will not fit the round-pin Type D sockets that remain widespread in older properties, guesthouses and rural areas, so bring an adapter regardless.
Do I need a voltage converter for Sri Lanka?
Usually not. Almost all modern phone chargers, laptop power supplies and camera chargers are dual voltage, marked 100 to 240V, and need only a plug adapter. Devices with heating elements such as hairdryers and straighteners often are not, so check the label first.
Are there power cuts in Sri Lanka?
Interruptions occur, particularly during storms and during periods of generation difficulty, though supply is generally stable. Most hotels above budget level have generators, which often power lights and fans rather than every socket. Carry a power bank and a torch.
Can you charge devices on Sri Lankan trains?
Not reliably. Hill country services in particular have no usable sockets, and long-distance buses generally have none. Carry a power bank for travel days if you depend on your phone for navigation, photography or tickets. Private vehicles usually have USB charging.
Should I buy an adapter in Sri Lanka or before I travel?
Before you travel. Adapters are available in Sri Lanka, but hunting for a shop on your first evening in a rural guesthouse is avoidable. Bring a universal adapter covering Type D and Type G, plus a small multi-socket extension lead if you travel with several devices.