Canada uses the Canadian dollar (CAD) as its official currency. Due to the common loon depicted on the dollar coin, it is also occasionally called the "loonie." After the US dollar, the euro, the Japanese yen, and the British pound, the Canadian dollar is the fifth most popular currency in the world. The health of the Canadian economy, the price of commodities on the world market (because Canada is a significant exporter of commodities like oil and natural gas), and interest rates set by the Bank of Canada are just a few of the variables that affect the value of the loonie.
You can exchange your money at any bank or the currency exchange.
Current rates can be seen at Bank of Canada website.