There are just about as many currencies as countries. Therefore, trading money is a big business for banks all over the world, travellers will use a currency exchange rate calculator.
The rate at which you can change your canadian dollar to another country's currency is the foreign exchange rate.Currency conversion is necessary for trade and travel.
Shopping in a foreign country is fun, and part of any holidays... let's be aware of the local currency Rate however... to avoid nasty surprises when our next credit card bill shows up in the mail