Math - Calculators (20)

OpalCalc is new type of calculator using natural language to function like Notepad or a word processor. It lets you build text with numbers adjacent to sums over multiple lines so you can quickly go back and adjust your previous calculations with the answers auto-updating on the fly. OpalCalc is ideal for putting math into everyday thinking such as for quick budgets and shopping lists.

Built-in features include percentages, currency conversion, custom functions/variables, date/time support, color coding, lightweight size, configurable interface, hundreds of measures and functions, and more.

Freeware version limited to 5 lines.

SpeedCrunch is a high-precision scientific calculator featuring a fast, keyboard-driven user interface.

Feature list:

• Displays results as you type. Select a partial expression to evaluate only that part.
• Previous inputs and results are shown in a scrollable history and can be easily recalled. Customizable syntax highlighting allows you to spot mistakes easily.
• If you prefer the old-school way, an optional on-screen keypad is available as well.
• Comes with over 80 built-in mathematical functions. You can also define your own functions.
• Variables allow you to store your results. Perform calculations with up to 50 digits of precision, using complex numbers, numeral bases, unit conversions, and more.
• Auto-completion allows you to speed up your task.
• A built-in formula book allows you to review and insert commonly used formulas, such as the volume of a cone.
• Over 150 built-in scientific constants available.

RedCrab is a scientific calculator with a full screen formula editor. Mathematical expressions can be entered in a window similar to a piece of paper. The calculator's editor supports the entry of complex algebraic equations like fractions, square roots, exponents etc. for technical and scientific applications.

Several mathematical functions can be written on the same page and results from one expression can be carried over to the next task. The program helps explain complex tasks visually by importing drawings in bitmap format.

Euler Math Toolbox is a numerical and symbolic math toolbox. Symbolic computation are done by working with Euler's native capabilities and also in conjunction with a seamlessly integrated version of Maxima computer algebra system. Euler Math Toolbox can also be used with LaTeX and Python (integration instructions). Euler Math Toolbox also supports the capabilities of using the built in C compiler (Tiny C) to run C code for important mathematical routines where high performances are required.

The program is developed by a math professor (Rene Grothmann) at the University of Eichstätt in Germany. Examples of problems solved with this program.

CalcPad is a unique way to combine natural language with standard math calculations. The program supports allows you to enter expressions, assign variables, define functions, convert units, add units together and much more. The program automatically evaluates everything you type as entered. Just like a notepad, you can go back and edit, add, or delete as needed.

Kalkules is an universal scientific calculator that comes with many nontraditional functions and built-in tools designed to make your calculations easier and faster.

Calculor is a powerful, easy-to-use calculator with inline math functions, delivering answers as you type. Notable aspects include additional string conversion functions, ability to double as a Run box with a keyword, lightening quick launch and global hotkey toggle.

Written in AutoHotkey.

TreeView Player (formerly Ubiquitous Player) includes a wide variety of programs in a single window. Includes a music player, web browser, image viewer, text editor, file manager, games, calculator and many more.

Console Calculator is a calculator with built-in console interface. You can enter complex expressions and see the results of multiple expressions at the same time. Console Calculator includes many built-in mathematical functions, remembers recent entries, and supports creation of user defined variables and custom functions. Also available for Mac OS X.

Website offline, linking to Softpedia.

Numculator is an always-at-hand, fast, and customizable calculator that can be activated via the NumLock key (to use numeric keypad) or by another hot key. It appears on screen when you want to calculate something easily and don't want to search for and run a program.

Supports a history of operations, skins, font and size customizations, different formatting of numbers, pasting result to documents, and more.

Note: Website is down - linking to Softpedia.

VKCalc is a lightweight scientific calculator that directly evaluates mathematical statements written in the common infix notation. The mathematical capabilities are limited to operations with complex numbers.

ESBCalc is a scientific calculator with Infix Notation, Brackets, Scientific Functions (Trigonometric, Hyperbolic, Logarithmic - including Base 10, Base 2 & Natural - plus more), Memory, Paper Trail, Result History List and more. As of version 5, support for Prefix functions is included so to evaluate log (10) you can enter log 10 rather than 10 log (which is the default behavior).

Calcute is an unobstrusive scientific tape calculator. Calcute lets you enter complete expressions as if you were using a regular text editor. You can see what you are doing so you can easily make corrections. Type what you want to calculate, press Enter to get the answer. The calculator keypad can remain hidden or it can be shown if you prefer to click buttons with the mouse instead of typing.

DateDiff is a calendar program that allows you to select two different dates, then calculates the number of days, hours, minutes and seconds between them. It can also determines what the date is X number of days before or after a given date.

Note: DateDiff 3.0 is not portable. We are linking to the a mirror of the last fully portable version (thanks to user Snidley).

XCALC is a highly configurable calculator that can be used for simple calculations using decimal or complex floating point, or hexadecimal, octal or binary integer numbers. The program uses RPN (Reverse Polish Notation), similar to the classic Hewlett Packard handhelds. You can choose from anything between a small window consisting of a single number display only (which you can float above other programs) to a full-fledged big display with all colors, buttons, bells and whistles.

Day Maxi Calc is a super-sized calculator, with a large button set and wide display. It has all the basic functions and also simulates the classic roll of paper. There is also the option of printing and/or saving your results.

Note: Main site offline -- linking to Softpedia download.

SpeQ is a lightweight, extensive mathematics program with a simple interface. All calculations are entered in a sheet, where you can add, edit and execute all calculations. You can define variables and functions, as well as plot graphs of your functions.

Calculations can be saved for later use.

SWAZZ is an extremely lightweight utility with more than 20 functions. The program includes a system monitor, tetris game, calculator, temperature converter, command prompt shortcut, browser address bar, Google search bar, transparent clock, live sunclock wallpaper, daylight zone simulator, quick menu function, ODBC ping tool, quick SQL client, quick screenshot, alarm tool, thermometer, mail notifier, mail previewer, LAN messenger, popup killer for IE, desktop painter and map services.

tabbyCalc is a minimalist calculator program where mathematical expressions are entered directly, instead of having to click on the buttons of a standard calculator-like interface. In addition, you get a running log of the calculations you have performed.

The program supports built-in functions like tan, cos, abs, factorial, etc.