This class makes unit conversion verry simple. You only have to call one function to convert a value from one unit to another.
It is also verry simple to add your own units to the class using xml.
Currently the class supports following units:
Angle Area Data Density Energy Length Pressure Temperature Time Velocity Volume Weight
31-08-2011 Light
But I am willing to add any units, just post a comment
You can view the documentation online at: http://codecanyon.deviaene.eu/unit_converter/doc/