Everything is measured through units. And there're multiple units to measure single thing. For example, temperature is measured in Celsius and Fahrenheit. We might have to  convert one unit to other. This process is called as unit conversion.

Numerous "Unit conversion" tools are available in the online now. But if you're using Windows 7 or Windows 8 operating systems, you can perform unit conversion with bundled "Calculator" application.

With windows calculator, you can perform unit conversion for below metioned unit types

  • Angle
  • Area
  • Energy
  • Length
  • Power
  • Pressure
  • Temperature
  • Time
  • Velocity
  • Volume
  • Weight/Mass

When you launch calcuator program, you'll get a basic version as below by deafult (on the left). Choose "Unit conversion" from "View" menu.

Basic windows calculator  Windows calculator view menu

You'll get an additional pane added to the right dispalying all the unit type conversion related fields as below

Windows Calculator unit conversion

Choose the unit type and metric you would like to convert from and to.

You don't need an addition applicaiton or web page to perform unit conversion if you're using Windows 7 or Windows 8.