Google is not only a search engine.
Did you know that you can use Google as a unit/currency converter and multi-unit/currency calculator?
Forgot how many cups in a teaspoon? Try typing "1 cup in tsp" as a Google search to get an answer.
Do you want to know how many seconds in a year? Try to search for "year in seconds".
Do you want to know the area in square feet of 3 meters * 1 cm ? Try "(3 m * 1 cm) in feet^2"
Do you want to know how much is a British pounds in dollars? Try "1 British Pounds in USD"
Do you want to know how much is a dollar in whatever currency they have in China? Try "1 USD in Chinese money"