A powerful, scriptable, modular calculator aimed at scientific, engineering or computing work. All features can be added, removed, and customised, and new features can be written in python.




Windows Calculator is described as 'A simple yet powerful calculator that includes standard, scientific, and programmer modes, as well as a unit converter. It's the perfect tool to add up a bill, convert measurements in a recipe or other project, or complete complex math, algebra, or geometry problems' and is a Calculator in the os & utilities category. There are more than 100 alternatives to Windows Calculator for a variety of platforms, including Windows, Android, Mac, Web-based and iPhone apps. The best Windows Calculator alternative is SpeedCrunch, which is both free and Open Source. Other great apps like Windows Calculator are Qalculate!, OpenCalc, GeoGebra Scientific Calculator and Numara Calculator.
A powerful, scriptable, modular calculator aimed at scientific, engineering or computing work. All features can be added, removed, and customised, and new features can be written in python.




Omni Calculator is a web/mobile calculator that solves concrete problems such as mortgage payment, gross margin, body mass index, break-even point, etc. It's very user-friendly, flexible and usable on web, mobile and as an embeddable web widget.




A Simple but elegant Calculator app made with Flutter using Google's Material Design with Currency (Exchange Rate) and Unit Converter.



EBTCalc is a Reverse Polish Notation (RPN) calculator that can have custom buttons. Custom buttons are programmed in Javascript with a convenient editor. EBTCalc runs on Windows 10, OSX, and Linux as well as Android. EBTCalc is open source.


ImaginaryInfinity Calculator is an expandable calculator. It's command line interface is designed to resemble that of some graphing calculators. New functionality can easily be added by installing user created plugins.




HEXelon MAX is a science calculator. It solves math expressions like: Sin(Pi)-Root(-8;3)+3. 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...



CrossCalc is day to day Scientific Calculator that can be used on all your devices. It respects your privacy and does not show any ads.




getcalc.com is a simple, intuitive & robust Online Calculators & Converters Application to perform simple to more complex math, science, finance, engineering calculations & measurement units conversion on the go, to increase productivity.




Ad-free calculator offering basic and scientific computations, including exponents, roots, fractions, and more, with intuitive single-line input, up to 10 decimal precision, viewable and editable calculation history, customizable color themes, and no paid features.



Free, simple and easy to use online calculators you can use for work, school or personal calculations. Calculator Pro is ideal for those who need to make some quick calculations.

Liri Calculator is a cross-platform, Material Design calculator, currently in alpha stage.


Console Calculator is a powerful calculator with a simple console interface. This calculator supports many built-in mathematical functions, remembers recent entries, supports creation of user defined variables and custom functions.


