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01Check one label before you buy anything
Charging your phone abroad is simpler than most travel stores make it look. Nearly every modern phone charger is dual-voltage, so the only thing standing between you and a full battery is the shape of the socket.
The US runs at 120V. Most of Europe, the UK, Australia and much of Asia run at 220 to 240V. A charger built for 120V only would overheat on 230V, which is why converters exist. But phone and laptop chargers have been built for both for years. The proof is printed on the brick.
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Find the small print
Look on the side or underside of the charger, sometimes molded into the plastic. You may need your phone's flashlight to read it.
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Look for the INPUT line
It reads something like INPUT: 100–240V ~ 50/60Hz. That range means it works on every country's mains supply.
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Check everything else in the bag
Watches, earbuds, cameras and laptops. Chargers are almost always dual-voltage. Hair dryers, straighteners and some electric toothbrush bases often aren't.
INPUT 100–240V = plug adapter onlyIf the input says 120V only, you need a voltage converter or a different charger.
02Find the plug shape for your destination
A few patterns cover most trips. Canada, Mexico, Japan and much of the Caribbean and Central America use the same Type A and B sockets as the US. Continental Europe mostly uses Type C, E and F, and the slim two-pin Type C plug fits nearly all of them. The UK, Ireland, Hong Kong, Singapore and the UAE use the three-pin Type G. Australia and New Zealand use the angled Type I.
Going to several countries? Our travel plug adapter finder walks through every plug type and the gotchas, like grounded plugs and multi-country adapters.
03Adapter, converter or a new charger?
Plug adapter
- Changes the plug shape only
- Small, cheap and light
- Your charger does the voltage work
Voltage converter
- Steps 230V down to 120V
- Heavy, and limited to a set wattage
- Not needed for a 100–240V phone charger
Charger with swappable plugs
- One brick, plug heads for each region
- Nothing extra hanging off the wall
- Check which heads come in the box
Some basic converters output rough, chopped power meant for heating elements, not electronics. A dual-voltage charger plugged into a simple adapter is safer and gets you full charging speed.
04If something in your bag is single-voltage
Once in a while the label says INPUT 120V only. That's common on older or very cheap USB chargers, some hair tools and a few small appliances. Plugging one of those into a 230V socket through a plain adapter can overheat or destroy it within seconds.
- Replace it if it's a phone charger. A dual-voltage USB-C charger costs less than a decent converter and weighs a fraction as much.
- Look for a voltage switch on hair tools. Many travel dryers and straighteners have a 120/240 selector. Set it before you plug in.
- Use a converter only for what truly needs it. Match the converter's wattage rating to the appliance, and don't use it for chargers that are already dual-voltage.
- Leave it home when you can. Many hotels have hair dryers in the room, which removes the problem entirely.
The good news: your phone itself never sees the wall voltage. The charger turns mains power into low-voltage USB power, and that USB side works the same in every country. Charging speed abroad matches home, as long as you bring the same charger and cable.
05Hotels, airports and the flight
- Hotel USB ports are often slow. Built-in ports in lamps and nightstands tend to be low power. Your own fast charger in the wall socket gets you to 100 percent much sooner.
- Outlets are scarce. One multi-port charger in one adapter charges your phone, watch and earbuds at once. That beats packing three adapters.
- Be wary of public USB charging stations. The FCC has warned travelers that public USB ports can be tampered with. Plug your own charger into a wall socket, or use a power bank.
- Power banks fly in carry-on only. Keep it at 100 Wh or less. The details are in our power bank flight rules.
- In-seat power varies. Some planes have AC outlets or USB-C, many have weak USB-A ports, some have nothing. Start the flight full.
Not sure how many charges a bank gives your phone? The power bank calculator works it out for your model.
06A lean charging kit for most trips
Pack one fast multi-port charger, the adapters it needs and a small power bank. For a full breakdown, including wattage and cable choices, see our travel charger setup.
Multi-port GaN chargers, a carry-on friendly power bank and a USB-C cable.
Questions people ask
Do I need a voltage converter to charge my phone abroad?
Almost never. Phone chargers from Apple, Samsung, Google and most other brands are rated 100–240V, so they handle foreign voltage on their own. Check the INPUT line on your charger. If it shows that range, a plug adapter is all you need.
Can I use my iPhone charger in Europe?
Yes, with a plug adapter. Apple's USB-C power adapters are dual-voltage, so a simple Type C or Type F adapter lets you plug one into a European socket. Confirm the 100–240V rating on the label first.
Is it safe to charge my phone on 220V?
Yes, if the charger is rated for it. A charger marked 100–240V adjusts automatically and sends the same safe USB power to your phone in any country. The phone itself never sees the wall voltage.
Will a universal travel adapter work for my phone?
Usually. Universal adapters change plug shapes for many regions, and phone chargers rarely need grounding. Check that it's rated for the wattage you'll use and that it has the plug type for each country on your trip.
Why does my phone charge slowly in hotels abroad?
Built-in hotel USB ports are often low power. Plug your own fast charger into the wall with an adapter instead, and use the cable that came with your phone or a rated replacement.