CalculatorX is an enhanced expression calculator. It can calculate an expression immediately. You can use Arithmetic, Logic, Bitwise and Relation operations in your expressions. A lot of system constants and built-in functions can also be used in the expressions. CalculatorX also supports the custom variables, functions and note-line. You can use Binary, Octal, Decimal and Hexadecimal numbers at the same time in the same expression.

CalculatorX has the unlimited ability to extend itself by using Custom Functions. You can add your own functions for CalculatorX in order to make simplier your work.

CalculatorX is powerful, and it is very easy to use. It's like many other calculators, but has more power!.

Here is just a short list of CalculatorX's major features:
- Arithmetic operation
- Logic and Bitwise operation
- Relation operation
- Built-In Functions
- Constant support, such as PI, E, TRUE, FALSE etc.
- Alias for operators and functions, e.g."sh" and "hsin" is the same function
- Unlimited nesting for expression
- The mixed operation for Binary, Octal, Decimal and HEXadecimal numbers
- Table/Array operation support
- "Simulate the exact value" operation
- Scientific notation for numerical value
- Custom variable support
- Note-line support
- Custom function support
- Upper case and lower case can be mixedly used in the expression
- Historical expressions log
- XP appearance support (in WinXP)
- Quick reference for input
- Base-N(2,8,10,16) results show
- Expressions manager support
- 'Auto Round Operation' according to the appointed bits