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Open Source Windows Calculator Alternatives

The best open source alternative to Windows Calculator is SpeedCrunch. If that doesn't suit you, our users have ranked more than 100 alternatives to Windows Calculator and many of them is open source so hopefully you can find a suitable replacement. Other interesting open source alternatives to Windows Calculator are Insect, GNOME Calculator, NaSC and NumWorks Graphing Calculator.

This page was last updated Jul 4, 2022
  • FreeOpen Source
  • Windows

A simple yet powerful calculator that includes standard, scientific, and programmer modes, as well as a unit converter....

Learn more about Windows Calculator

  1. SpeedCrunch is a free, fast, high precision open source algebraic calculator with an intuitive interface and many features, such as variables, syntax highlighting, functions, persistent input history & more.

    SpeedCrunch vs Windows Calculator opinions
    Almost everyone thinks SpeedCrunch is a great alternative to Windows Calculator.

    It is simply, fast and functional, any problems with formulas. Good bye caculator of windows 10.

    Positive comment over 5 years ago
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    5

    Clean and lots of keybinds for speed.

    Positive comment over 1 year ago
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    0

    It is like a good old copybook where you can write all formulas you need in "natural" way.

    Positive comment over 5 years ago
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    1

    It's a terminal based calculator. Features a good interface for inputting slightly longer calculations. Allows editing the input text if you make errors. Offline available, free, pleasing to the eye and customizable.

    Positive comment almost 3 years ago
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    1
  2. Insect

    • FreeOpen Source
    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted

    High precision scientific calculator with full support for physical units (web and terminal versions).



  3. GNOME Calculator

    • FreeOpen Source
    • Linux
    • GNOME

    Calculator is an application that solves mathematical equations and is suitable as a default application in a GNOME Desktop environment.

    GNOME Calculator vs Windows Calculator opinions
    pros, cons and recent comments

    It is well-maintained by many contributors.

    Positive comment about 3 years ago
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    -1
  4. NaSC

    • FreeOpen Source
    • Linux

    Its an app where you do maths like a normal person. It lets you type whatever you want and smartly figures out what is math and spits out an answer on the right pane.

  5. NumWorks Graphing Calculator

    • FreeOpen Source
    • Online
    • Android
    • iPhone
    • iPad

    NumWorks designed an intuitive and evolutive graphing calculator to make learning maths easier.



  6. Giac/Xcas

    • FreeOpen Source
    • Mac
    • Windows
    • Linux

    Giac/Xcas is a free computer algebra system for Windows, Mac OS X and Linux/Unix (license GPL3, for commercial dual-license contact us).

  7. Calculator N+

    • FreeOpen Source
    • Android

    Power calculator for Android. Has Calculus, Algebra, 2D/3D Graphing and other features.

  8. GeoGebra Scientific Calculator

    • FreeOpen Source
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad

    Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!

  9. Neumorphic Calculator

    • FreeOpen Source
    • Android
    • Android Tablet
    • F-Droid

    A Soft UI (Neumorphism) Simple Calculator created using Flutter.

  10. Simple Calculator

    • FreeOpen Source
    • Android
    • Android Tablet
    • F-Droid

    A calculator with the basic functions and a customizable widget.

Showing 10 of 29 alternatives