PG Calculator is a wonderful scientific calculator that simulates a real one. It includes many of the functions included in a real one and can be easily used by anyone who has had experience with real ones.
The calculator is very attractive and includes many skins to choose from, and the numbers and functions are clear enough. Apart from the basic functions it includes several applications as well, such as a constants library which provides the values of several physics and chemistry constants, so you don't have to search in tables; a time value of money solver; and a wonderful unit converter. It even allows you to create your own variables that can be saved for later use.
The maths menu includes real, complex, units, base, bits, vector,logical, trigonometric, and hyperbolic functions. What is more, the numbers can be used in binary, octal, hexadecimal and exponential format. As you can see, this calculator is very complete and can eliminate the trouble of taking your scientific calculator with you. With PG Calculator, you can have it everywhere you go.