GoogleSearch can also be used as a calculator that can interpret some fairly free-form expressions. For example, search for:
- 2 + 2
- two plus nine
- square root of eighty-one
- 3^27
- 30 metres in inches
- eight thousand square millimeters divided by 4 in hectares
Which is pretty handy; it's better than most physical calculators out there. - EssKay
See http://www.google.com.au/help/features.html#calculator, WhimsicalUnitsOfMeasurement