Justin pointed this out to me today: Google’s Calculator. Not only does it do simple and complex math operations, it will also convert between different units. For example, type in “1800 cubic centimeters in cubic inches“, and it returns 109.842739 cubic inches. Pretty sweet–I’m sure i’ll be using it quite a bit.
I love the google calculator.. I use it all the time when I’m working on homework & left my calculator in the car or something.
I use it all the time when I have nothing to do.