Foreign Exchange trading is in general the trading of many currencies of the world. This trading is always done in pairs or quotes– Forex Currency Pairs, one currency is bought and the other is sold.

Direct Currency Quote vs. Indirect Currency Quote

There are two ways to quote a Forex currency pair, either directly or indirectly. A direct currency quote is simply a currency pair in which the domestic currency is the base currency; while an indirect quote, is a currency pair where the domestic currency is the quoted currency. So if you were looking at the Canadian dollar as the domestic currency and U.S. dollar as the foreign currency, a direct quote would be CAD/USD, while an indirect quote would be USD/CAD. The direct quote varies the foreign currency, and the quoted, or domestic currency, remains fixed at one unit. In the indirect quote, on the other hand, the domestic currency is variable and the foreign currency is fixed at one unit.
For example, if Canada is the domestic currency, a direct quote would be 0.85 CAD/USD, which means with C$1, you can purchase US$0.85. The indirect quote for this would be the inverse (1/0.85), which is 1.18 USD/CAD and means that USD$1 will purchase C$1.18.
In the forex spot market, most currencies are traded against the U.S. dollar, and the U.S. dollar is frequently the base currency in the currency pair. In these cases, it is called a direct quote. This would apply to the above USD/JPY currency pair, which indicates that US$1 is equal to 119.50 Japanese yen.
However, not all currencies have the U.S. dollar as the base. The Queen's currencies - those currencies that historically have had a tie with Britain, such as the British pound, Australian Dollar and New Zealand dollar - are all quoted as the base currency against the U.S. dollar. The euro, which is relatively new, is quoted the same way as well. In these cases, the U.S. dollar is the counter currency, and the exchange rate is referred to as an indirect quote. This is why the EUR/USD quote is given as 1.25, for example, because it means that one euro is the equivalent of 1.25 U.S. dollars.
Most currency exchange rates are quoted out to four digits after the decimal place, with the exception of the Japanese yen (JPY), which is quoted out to two decimal places.
Cross Currency
When a currency quote is given without the U.S. dollar as one of its components, this is called a cross currency. The most common cross currency pairs are the EUR/GBP, EUR/CHF and EUR/JPY. These currency pairs expand the trading possibilities in the forex market, but it is important to note that they do not have as much of a following (for example, not as actively traded) as pairs that include the U.S. dollar, which also are called the majors.
