http://www.wolframalpha.com/
It calls itself a "Computational Knowledge Engine", and at first it's use doesn't seem to make sense...
Until you try a few examples and realize that next time you have this sort of question you should type it into here instead of google.
http://www.wolframalpha.com/input/?i=fat+i...megranate+juice
http://www.wolframalpha.com/input/?i=15000...+the+unix+epoch
It calls itself a "Computational Knowledge Engine", and at first it's use doesn't seem to make sense...
Until you try a few examples and realize that next time you have this sort of question you should type it into here instead of google.
http://www.wolframalpha.com/input/?i=fat+i...megranate+juice
http://www.wolframalpha.com/input/?i=15000...+the+unix+epoch