This scientific calculator offers a customizable user interface, and works in algebraic and RPN modes. It recognizes real and complex numbers, and allows vector manipulations. There are up to 120 recognized units of measure with the possibility to make conversions between consistent units. The program allows user-defined variables, and enables number input in binary, octal, hexadecimal and exponential formats.

PG Calculator has about 80 built-in functions described below:
1. Addition, substraction, multiplication and division;
2. Power and roots; sin, arcsin, cos, arccos, tan, arctan, cotan, hyperbolic functions;
3. natural and decimal logarithms, exponent;
4. Sum, average, maximum, minimum, absolute value;
5. Logic functions: ==, <>, >, >=, <, <=;
6. Complex numbers functions: real part, imagine part, arg, norm, conj;
7. Numbers format conversions; Degree measure conversions; Units of measure conversions;

The license of this software is Free Trial Software, the price is $19.95, you can free download and get a free trial.