Conversions between units of measurement

You must use the units
ConvUtils and StdConvs

Convert (value: Double; FromUnit, ToUnit: TConvType): Double;

Example:

Convert inch to centimeters

VAR inch, cnetimeters: Double;
BEGIN
   inch: = 21;
   Centimeters: Convert = (inch, auSquareInches, auSquareCentimeters);
   Memo.Lines.Add(Format('%8.4f inch of area = %8.4f centimeters of area ', [inch, centimeters]));