§ 01
Find the label
Look on your device or its power adapter for electrical specifications. Usually printed near the power-cord connection or on the charger brick.
Tip · Can't find it? Check the user manual or the manufacturer's website.
§ 01 · The mistake
What people think, versus what actually happens.
The most expensive lesson in travel electronics is the one nobody warns you about until after you've learned it.
The assumption
“I'll just buy a travel adapter and all my devices will work abroad.”
The result
Burnt-out hair dryer, dead curling iron, and a faint smell of melted plastic. In the worst case, a fire.
The fix
Check every device for voltage compatibility before you go.
The result
Everything works. You bring the right gear, leave the wrong gear at home, and your devices come home with you.
§ 02 · The two devices
Adapter or converter, not the same thing.
One reshapes the plug. The other reshapes the electricity. Buying the wrong one is the most common mistake travelers make.
Travel adapter
Travel adapter — changes plug shape only.
- ✓Lets your plug fit foreign outlets
- ✓Small, lightweight, $5–20
- ✓Perfect for dual-voltage devices
- ✗Does NOT change voltage or frequency
When to use
Use when your device already supports 100–240V (check the label).
Voltage converter
Voltage converter — changes the voltage itself.
- ✓Converts 220V to 110V (or vice versa)
- ✓Protects single-voltage devices
- !Heavier and pricier ($20–100+)
- !Has wattage limits — check your device
When to use
Use when your device's voltage doesn't match the destination.
§ 03 · The check
Four steps before you pack.
Pull a charger out of the wall. Look at the brick. Read four numbers. That's the entire process — but skipping it is what fries devices.
§ 02
Check the voltage
Look for INPUT followed by a voltage range. '100–240V' is the holy grail — that's dual voltage and works worldwide.
✓ INPUT: 100–240V✗ INPUT: 120V only§ 03
Check the frequency
Hz (Hertz) refers to how many times per second the current alternates. 50/60Hz means it works on both standards in use globally.
✓ 50/60Hz✗ 60Hz only§ 04
Note the wattage
If you'll need a voltage converter, make sure it can handle your device's wattage. Hair dryers can pull 1800W+ — most converters can't.
Tip · High-wattage devices often need special travel-rated converters or local replacements.
§ 04 · The kit
Common devices, how they travel.
A practical reference. Always verify the actual label on your specific device — manufacturers vary, and what's true in general isn't always true for yours.
Phone chargers
Dual voltageMost smartphone chargers (Apple, Samsung, etc.) are 100–240V.
Laptop chargers
Dual voltageNearly all laptop power bricks support 100–240V.
Camera chargers
Dual voltageMost camera battery chargers work worldwide.
Electric toothbrush
Dual voltageCharging bases are usually 100–240V.
Hair dryers
Single voltageBuilt for local voltage (120V US, 220V Europe). Always check or buy a dual-voltage travel model.
Curling irons
Single voltageMade for local voltage only — check the label before you pack.
Electric razors
MixedSome are dual voltage, some aren't. Always verify.
Travel kettles
Single voltageBuilt for local voltage. Buy locally or get a dual-voltage version.
Gaming consoles
Dual voltagePlayStation, Xbox, Nintendo Switch are typically 100–240V.
CPAP machines
Dual voltageMost medical devices support dual voltage — verify with manufacturer.
§ 05 · The world
Standards, region by region.
The cleanest mental model: the Americas at 120V, most of the rest of the world at 220V — with Asia and Latin America scattered between them.
Europe
Examples
UK · France · Germany · Spain · Italy
Asia Pacific
Examples
Japan · Australia · China · India
§ 06 · Frequency
What about 50 vs 60 Hz?
A second standard you'll see on the label. For most modern electronics it doesn't matter. For a handful of devices with motors, it does.
The basics
Hertz, briefly.
Frequency is how many times per second the electrical current alternates direction. Two standards exist worldwide.
- 60 Hz — North America, parts of South America, eastern Japan.
- 50 Hz — Europe, UK, Australia, most of Asia and Africa.
Does it matter?
Mostly no.
For phones, laptops, USB-anything, modern cameras — frequency is irrelevant. They run on either.
Exceptions
- Analog clocks may run faster or slower.
- Record players will affect playback speed.
- Some older AC-motor appliances.
§ 07 · Field notes
Six things that actually help.
The small habits that separate a smooth electronics setup from a charging-cable disaster on day two.
§ 01
Buy travel versions
For hair dryers and styling tools, dual-voltage travel versions are lighter, safer, and made for the road.
§ 02
Use USB whenever possible
USB operates at 5V universally. A USB charger with a plug adapter is the safest setup you can travel with.
§ 03
Photograph the labels
Before you leave, photograph the voltage labels of every device you're bringing. It's easier than digging out chargers later.
§ 04
Check hotel amenities
Many hotels provide hair dryers and adapters in the room. Don't pack what you don't actually need.
§ 05
Use surge protectors
A travel surge protector adds a real layer of protection — particularly in destinations with less stable grids.
§ 06
Universal adapter kit
A good universal adapter covers 150+ countries with one device. Worth the investment if you travel more than once a year.
§ 08 · The gear
What we travel with. And recommend.
A handful of pieces that solve almost every voltage situation. We earn a small commission if you buy through these links — it keeps the site free.
Travel adapters & power
Universal adapter kit
One device that covers 150+ countries — plus USB-A and USB-C built in for phones, tablets, and laptops on the same brick.
Browse on Amazon →Surge protectionTravel surge protector
The protective layer between an unstable hotel grid and your $1,500 laptop. Look for a joule rating of 1000+.
Browse on Amazon →§ 09 · Questions
The questions we get most.
Eight answers to the things travelers actually ask before they leave — and after they get burned.
§ Now you know