Vincent,

Here is a slight improvement for the Conversion Library.

Code:
    Function KilometersToMiles Decimal decKilometers Returns Decimal
        Decimal decMiles
        
        //Move (decKilometers * 0.6214) to decMiles // this an approximation
        Move (decKilometers * 0.62137119223733) to decMiles // more accurate
        
        Function_Return decMiles
    End_Function