Travel Power Guides

Short, honest answers to the questions travelers actually ask.

Adapter vs Converter: What's the Difference? A plug adapter changes the shape of your plug so it fits a foreign socket; a voltage conve… What Does "100–240V" Mean? (Dual Voltage Explained) "100–240V" means your device is dual voltage: it works on any grid in the world with just … What Happens If You Plug 110V Into 220V? A 110–120V-only device plugged into 220–240V receives roughly double the voltage it was bu… Step-Up vs Step-Down Converters A step-down converter lowers high voltage (e.g. 230V → 120V) for a low-voltage device; a s… What Wattage Converter Do I Need? Choose a converter rated for at least 25–30% more watts than your device draws — for examp… Brazil: 127V or 220V? Brazil has no single national voltage — most of the south and southeast (São Paulo, Rio) i… Are All USB Chargers Dual Voltage? Almost all modern USB and USB-C chargers are dual voltage (100–240V) and work worldwide wi… Where Is My Device's Voltage Label? Look on the underside of the device, on the power plug itself, or on the charger/power bri… Do You Need a Universal Travel Adapter? A universal travel adapter is worth it if you visit several plug regions, but it only chan… Plug Types by Country (A–N Guide) There are 14 common plug types (A–O). North America and Japan use Type A/B; most of Europe…