Just enter the value you wish converted into the 'From' edit box. Pick the tab (Temperature, Distance, Mass, Area, Volume, Pressure, Velocity, Acceleration, Force, Energy, Power, Fuel Consumption, Flow or Torque) relating to the type of conversion you wish to do. Then pick the units for the 'From' value and the 'To' value. It's easy and many find it convenient, saving it to their desktops for quick access.
To download, click the following link and choose to SAVE the single file to your computer. Then use it! It's self-contained and does not need to be 'installed.' Download and SAVE file now.