Whether it’s a short trip to get a haircut or a long one to some far-flung tropical island, some gadgets are so essential that we need to have them around wherever we go. As a traveler, however, you don’t have to know about the inner workings of your gadgets, or understand how electricity works, to know that it’s never as simple as plugging an adapter to an electrical outlet. Voltage frequencies and socket types vary from country to country, after all — and imagine arriving somewhere where your phone or your laptop won’t work or can’t be charged. Luckily for us, there are many power converters available to solve this very issue. In fact, here’s a roundup of the best power converters available on the market today.