Shortcuts on Google
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Tucked away in Google Search's code are several features designed to help you get quick answers - right from the search bar.

Dictionary definitions
"testing""definition"

Converting currencies
us$10 to sgd

Calculator
5*9+(sqrt 10)

World time
"what time is it in hong kong"

Check flight schedules
sq972

Converting units
5 gallons to litres

Search for specific terms
"nobel prize winner 2011"

Package tracking
1Z1122W79825679446