Title: International Currencies and Currency Codes - Nations Online Project
Headings: International Currencies and Currency Codes
International Currencies and Currency Codes
Foreign Money.

Content: Countries in which the US Dollar is the official currency: East Timor, Ecuador, El Salvador, Federated States of Micronesia, Marshall Islands, Palau, Panama, and Zimbabwe. The US dollar is pegged by 27 currencies. In 19 countries of the European Union, the Euro is the sole legal tender. Additionally, Andorra, Monaco, San Marino, and the Vatican City use the Euro as their official currency and issue their own coins. Twelve currencies are pegged to the Euro at a fixed exchange rate. Exchange Rates
The exchange rate is the rate for how much money you get for your bucks or euros. In expert-speech, it is the value of one currency for the purpose of conversion to another. There you go. The exchange rate is changing more or less on a day to day base, but not much.