1 USD (United States Dollar) is approximately equal to 6.3281 RMB (Chinese Yuan Renminbi - CNY). The US dollar can also be termed as United States Dollar, US$, dollarr or American Dollar. It is the official currency of America and it is the fiat currency. It is the world's most dominant reserve currency. The symbol used to express the dollar currency is $. The history of the symbol holds many assumptions. Besides, there are two countries which use the dollar as their which includes the British Virgin Islands and the Turks and Caicos islands.