USD, or United States Dollar, is the official currency of the United States, recognized globally for its stability and wide acceptance in international trade. CHF, or Swiss Franc, is the currency of Switzerland, known for its reliability and strong value in the global market. The symbol for USD is $, while the symbol for CHF is CHF or Fr. USD can buy a range of items, such as clothing, groceries, or a nice dinner out, with $400 offering a decent shopping or dining experience.