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.

How to Calculate Growth Rates Growth rates can be calculated in several ways, depending on what the figure is intended to convey.