Open Source Windows Calculator AlternativesTop Calculators and other similar apps like Windows Calculator

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 Qalculate!, OpenCalc, GeoGebra Scientific Calculator and Numara Calculator.

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Alternatives list

  1. SpeedCrunch icon

    SpeedCrunch

     291 likes
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    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.

    130 SpeedCrunch alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Alerts

    • Discontinued

    Platforms

    • Mac
    • Windows
    • Linux
    • PortableApps.com
    Dark Mode
     
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    5
    36
    Comments about SpeedCrunch as an Alternative to Windows Calculator
    Top Positive Comment
    nickkiousis
    1

    It is clean, design can be configured, it does it's job as a calculator, it can be set to be always on top of other applications, it keeps history even after closing it. It is the best calculator I have ever used!

    Review by a new / low-activity user.
    Guest
    Positive
    1

    Clean and lots of keybinds for speed.

    Review by a new / low-activity user.
    Guest
    Positive
    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.

    Review by a new / low-activity user.
    Show more comments
    3 of 5 comments
    Windows Calculator Icon
    SpeedCrunch icon

    • Most users think SpeedCrunch is a great Windows Calculator alternative.

    • SpeedCrunch is the most popular Windows, Mac & Linux alternative to Windows Calculator.

    • SpeedCrunch is the most popular Open Source & free alternative to Windows Calculator.

    • SpeedCrunch is Free and Open SourceWindows Calculator is also Free and Open Source
    • SpeedCrunch is Privacy focusedWindows Calculator is not according to our users
  2. Qalculate! icon

    Qalculate!

     101 likes
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    Qalculate! is a multi-purpose cross-platform desktop calculator. It is simple to use but provides power and versatility normally reserved for complicated math packages, as well as useful tools for everyday needs (such as currency conversion and percent calculation).

    115 Qalculate! alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    Main window
     
  4. OpenCalc icon

    OpenCalc

     21 likes
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    A simple and beautiful calculator for Android.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • Android Tablet
    • F-Droid
    OpenCalc screenshot 1
    OpenCalc screenshot 2
    OpenCalc screenshot 3
     
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    1
    Comments about OpenCalc as an Alternative to Windows Calculator
    Marcus Holloway
    Negative
    0

    This runs on Android, not Windows. Therefore, it is not a viable option for Windows Calculator.

    Windows Calculator Icon
    OpenCalc icon

    • OpenCalc is the most popular Android & Android Tablet alternative to Windows Calculator.

    • OpenCalc is Free and Open SourceWindows Calculator is also Free and Open Source
    • OpenCalc is Privacy focusedWindows Calculator is not according to our users
  5. GeoGebra Scientific Calculator icon

    GeoGebra Scientific Calculator

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

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    GeoGebra Scientific Calculator screenshot 1
     

    • GeoGebra Scientific Calculator is the most popular Web-based, iPhone & iPad alternative to Windows Calculator.

    • GeoGebra Scientific Calculator is Free and Open SourceWindows Calculator is also Free and Open Source
    • GeoGebra Scientific Calculator is Privacy focusedWindows Calculator is not according to our users
  7. Calculator You icon

    Calculator You

     5 likes
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    Discover the ultimate calculator experience with our beautifully designed app, featuring 60+ stunning color themes to match your style. Whether you're tackling complex scientific equations or simple everyday calculations, our powerful and user-friendly interface makes it all...

    59 Calculator You alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Android
    • F-Droid
    Calculator You screenshot 1
     
  9. Numbat icon

    Numbat

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

    75 Numbat alternatives

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Windows
    • Linux
    • Online
    • Self-Hosted
    Numbat screenshot 1
     

    • Numbat is the most popular Self-Hosted alternative to Windows Calculator.

    • Numbat is Free and Open SourceWindows Calculator is also Free and Open Source
    • Numbat is Privacy focusedWindows Calculator is not according to our users
  10. GNOME Calculator icon

    GNOME Calculator

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

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Linux
    • Linux Mobile
    • Flathub
    • GNOME
    • Flatpak
    Basic Mode
     
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    1
    Comments about GNOME Calculator as an Alternative to Windows Calculator
    Guest
    Positive
    -1

    It is well-maintained by many contributors.

    Review by a new / low-activity user.
    Windows Calculator Icon
    GNOME Calculator icon
    • GNOME Calculator is Free and Open SourceWindows Calculator is also Free and Open Source
  11. Uno Calculator icon

    Uno Calculator

     6 likes
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    Open-source calculator app with Windows Calculator features including standard, scientific, and programmer modes, plus unit and currency conversions. Available for macOS, Linux, Android, iOS, and web, with an intuitive interface for both desktop and mobile devices.

    Cost / License

    • Free
    • Open Source

    Application type

    Platforms

    • Mac
    • Linux
    • Online
    • Android
    • iPhone
    • Android Tablet
    • iPad
    • Flathub
    Uno Calculator screenshot 1
    Uno Calculator screenshot 2
    Uno Calculator screenshot 3
     
12 of 47 Windows Calculator alternatives