PG Calculator is a powerfull scientific calculator and an excellent replacement for standard Windows calculator. It ofers full customizable user inteface and looks like real calculator on user desktop. PG Calculator works in algebraic and RPN mode. It recognizes real and complex numbers and allows vectors manipulations. There are up to 120 recognized units of measure with possibility to make conversions between consistent units. PG Calculator allows user-defined variables, enables numbers inputing in binary, octal, hexadecimal and exponential formats. Up to 80 build-in functions: algebraic, trigonometry, hyperbolic, logical, numbers format convertions, units of measure conversions and statistical. Installation package includes PG Calculator executable file, help file in English, PG Unit Converter, skin editor and 7 additional skins. Also all skins and skin editor are available for download from PG Calculator Web Site.