Find a website with a currency converter, such as that located at Oanda.com (see References). Make sure the website uses the latest exchange rates for the most accurate results.
Select "British Pounds" or "GBP" from the menu. Input the amount of pounds you wish to convert.
Select "Canadian Dollars" or "CAD" as your target currency.
Press the "Convert" button. The website will display the conversion where the target currency is denoted. Note that many conversion websites will automatically convert the currency once you have selected the target currency.