Where can you find a Bitcoin exchange rate chart?

Find current Bitcoin exchange rate charts on sites such as CoinBase.com, CoinDesk.com, Preev.com and BitcoinCharts.com. The exchange rate is determined by the number of available Bitcoins in circulation and the overall faith in the currency among its users and other financial institutions.

Bitcoin is a digital cryptocurrency that is not controlled by any financial institution, but rather communally through open source coding. As there are only a finite number of Bitcoins available, the number in active use greatly determines the relative price compared to other forms of currency. A user possesses and transfers Bitcoins through a digital wallet, which is stored in the main code for the currency.