The reliable Calculator in windows 7 has been beefed up to do more than just basic arithmetic. You can now toggle between Standard, Scientific, Programmer, and even Statistics modes. In addition, the Options menu lets you pull out many new automated conversation tools, such as Unit Conversion (e.g., Angles, Temperature, Velocity, and Volume) and Date Calculation (e.g., calculate the difference between two dates). Other templates give you the ability to workout petrol/diesel mileage (and with the rates those are rising how can knowing cost per mile not be good news), and even mortgage estimates based on any variables you input.
