Currency exchange rates play a fundamental role in global finance, international trade, and even everyday transactions. They affect everything from the price of imported goods at your local store ...

Whether you’re planning a vacation, running an international business, or investing internationally, understanding how to calculate and interpret foreign exchange rates is an essential skill.

Learn how to interpret a foreign exchange quote and how to think about gains and losses -- with examples.

The Rule of 72 is a shortcut or rule of thumb used to estimate the number of years required to double your money at a given annual rate of return and vice versa.