Convert currency. Type “15 USD to GBP” to convert dollars to British Pounds, for example. Other currency abbreviations include EUR (Euro), MXN (Mexican Peso), CAD (Canadian Dollar), THB (Thai Baht), and SGD (Singapore Dollar).
Convert units. Any of the following work: “12 Gallons to Liters,” “24 MPG to Liters per 100 kilometers,” and “12 degrees Celsius to Fahrenheit.”
Constrain your search to a particular filetype. For example, type “Sexual Harassment filetype:PPT.” This will give you PowerPoint presentations containing the keywords “Sexual Harassment.”
Get a stock value. Type in the stock symbol to get the latest price. Type “AAPL” to get the latest price of Apple stock.
Synonym search. Put a tilde before the word. For example, if you search for “~automobile,” this will return you results for car, auto, automobile, and so on.