When planning a budget vacation to a foreign country, finding cheap transportation and lodging is an important first step — but only the first step. There are also the costs of food, in-country travel, shopping, and other expenses, and to properly calculate those costs, first you must determine how much of that country's currency your U.S. dollars (USD) will buy.
Currency conversion rates can change literally overnight, so today's great deal might be next week's bad bargain (and vice versa). If a country you hope to visit currently has a good exchange rate relative to the dollar, it might be wise to switch some dollars into that currency now, in case the dollar weakens before your trip. Most of these 17 countries' currencies are cheap (or cheaper than usual) this summer. (All currency conversion rates in this article apply to early July 2018.)