Google Search Gets a Cool, Useful Calculator | Eclectic Technology | Scoop.it
From mashable.com - July 25, 2012 2:07 PM
Google just added an interactive calculator to its search results that works on desktop and mobile browsers.

Along with basic buttons this virtual calculator includes standard trig functions, exponents plus buttons for pi and e. Not only can you push the buttons, but you may also do calculations via a voice search.