Lesser known Google search tips and hacks - Quora.com

Use Google Search as a Timer

Example , type in the search:"Set Timer 35 minutes" (Without quotes)
And google creates a timer on the web page, with customizable options, including

• Progress bar

• Stop

• Reset

• Audio feature

Timer counts in hours, minutes or seconds

Source http://www.quora.com/Google/What-are-some-lesser-known-Google-search-tips-and-hacks