I just recently realized that the US dollar sign ($) is really easy to confuse. Not only does the United States use $, but Canada, Australia, and New Zealand also use it—no wonder you need to pay special attention when trading in foreign exchange.

Actually, understanding currency symbols is pretty important for foreign exchange trading. For example, the EUR/USD we often see means the euro versus the US dollar. When you see €, you immediately know the currency pair involves euros. Without these symbols, we’d have to write out the full currency names every time—it would be so much trouble.

However, the US dollar sign $ is used in more than 30 countries, so when trading you need to clearly check the code right before it. US$ is the US dollar, NT$ is the New Taiwan dollar, C$ is the Canadian dollar, and HK$ is the Hong Kong dollar. There are also symbols like the British pound £, the Japanese yen ¥, and the euro €—each has its own symbol, so you can recognize them at a glance.

What’s interesting is that the same symbol can mean completely different things in different fields. For example, the symbol ฿ represents the Thai baht in foreign exchange, but in cryptocurrency it becomes the symbol for Bitcoin. Also, the symbol ¥ is used in China to represent the renminbi (RMB), while in Japan it represents the Japanese yen. To distinguish, you would write CNY¥ or JPY¥.

If you’re using Windows or Mac, there are shortcut keys that let you quickly enter commonly used symbols. On Windows, the US dollar sign is directly Shift+4, and the euro is Alt+E. On Mac, the US dollar sign is also Shift+4, and the euro is Shift+option+2. Once you get used to it, entering the US dollar sign and other currency symbols becomes fast.

Speaking of foreign exchange currency pairs, basically they are the exchange rate between two currencies. USD/GBP means how many British pounds you can get for one US dollar. The currency in front—USD—is called the base currency, and the currency after it—GBP—is called the quote currency. Investors make profits by buying and selling these currency pairs. Have you ever run into a situation where symbols got mixed up?