Free advanced scientific calculator software for windows

A general-purpose scientific calculator that you can use as a computer-desktop calculator Java Scientific Calculator is a small, simple and easy-to-use Java-based application that represents a general-purpose scientific calculator which you can use as a computer-desktop calculator or in a web application.
In addition to basic arithmetic functions it provides trigonometric functions, logarithms, powers and roots, complex numbers, binary, octal, decimal and hexadecimal calculations, logic, scientific notation, memory, statistical funcions (mean, and population and sample standard deviations), permutations and combinations.
Java Scientific Calculator also supports editing and replay of input and copying of output to the (system) clipboard. You can resize the application to one of three sizes and use the keyboard instead of the mouse for all keys.
Java Scientific Calculator was originally designed as part of a web application to show how you can use a calculator to calculate confidence intervals. This is why it has statistical functions and behaves in a similar way to pocket scientific calculators.
System requirements:
- Java 2 1.5

Advanced DivX Calculator can find the video bitrate, sound bitrate, number of megabytes needed and how long a video you can encode.
Advanced DivX Calculator is a software that allows you to calculate video bitrate.

English version.
Solves math expressions like: Sin(Pi)-Root(-8;3)+3
Creates users functions (e.g. surfaces, volumes, and so on). Publishes in Internet. Receives from Internet.
Program shows position of bugs in math expression made by user. Descriptions of bugs help solve a problem.
Prompter shows functions, variables, constants. Simply press SPACE key.
Exchange rates table and currency converter are update from Internet by one click.
Units converter makes easier to convert various units.
14 categories of units: length, temperature, pressure and so on.
Creates users variables.
Numeral systems: binary, octal, decimal, hexadecimal.
Measures of angle: radian, degree, gradus.
5 sets of keyboards configured ba a user.
3 calculators - user can calculate three various math expressions.
Button Undo and Redo.
History of math expressions.
Comprehensive Help.

The Scientific Calculator Opera Widget supports trigonometry, logarithms, combinations and permutations and more The Scientific Calculator Opera Widget is a two-line scientific calculator that provides the look and feel of a real calculator.
With a dedicated line for the equation and another for the result, complex equations can be written with ease.
You can input numbers and simple functions via the keyboard and more advanced functions are available using the normal calculator buttons.
Main features:
- Trigonometry
- Logarithms
- Combinations and permutations
- 7 programmable memory locations
- Pseudo-random number generator
If you dont like the default look, you can change it! Five different skins are provided.
Note: This calculator is only as accurate as the JavaScript runtime environment, floating point rounding errors can occur.
System requirements:
- Opera 9 or later

Currency calculator with tape - emulation of desktop printing calculator.
Easy and simple, can be operated entirely by keyboard.
Supports copy/paste, undo for last operation

A small calculator like the Windows calculator. I created this as a quick replacement. It is small and fast and does simple math. I will be adding skins and scientific functions.

ReactOS Calc is a scientific calculator that has been written with the purpose to be a clone of calculators included into MS Win32 operating systems. It has a similar user interface and keyboard shortcuts.
ReactOS Calc is a program for evaluating mathematical, financial and statistical calculations.
Main features:
- Internal precision with 17 decimal numbers.
- Robust RPN (reverse polish notation) engine which allows a virtually unlimited number of arithmetic and algebraic sub-expressions.
- Two different interfaces: standard or scientific.
- Many common arithmetic, algebraic and statistical functions are included.