Exchange rates

In finance, the exchange rate (also known as the foreign-exchange rate, forex rate or FX rate) between two currencies specifies how much one currency is worth in terms of the other. For example an exchange rate of 123 Japanese yen (JPY, ¥) to the United States dollar (USD, $) means that JPY 123 is worth the same as USD 1. The foreign exchange market is one of the largest markets in the world. By some estimates, about 2 trillion USD worth of currency changes hands every day.
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the market price of one currency against the market price of any other currency. The price is determined by demand and supply for money e.g. demand for USA products/services = demand for dollars = increase in price; also the opposite.

The price of foreign currencies. If it costs $.42 to buy one Swiss Franc, the exchange rate is .4200. As one currency is inflated faster or slower than the other, the exchange rate will change, reflecting the change in relative value. The currency being inflated faster is said to be becoming weaker because more of it must be exchanged for the same amount of the other currency. As a currency becomes weaker, exports are encouraged because others can buy more with their relatively stronger currencies.

Dutch: Wisselkoersen

French: Liste des taux de change

german: Liste der Umrechnungskurse