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 Qalculate!, Insect, OpenCalc and NaSC.

Windows Calculator alternatives page was last updated

Windows Calculator

Free • Open Source
Calculator

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

More about Windows Calculator

SpeedCrunch
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Mac
Windows
Linux
PortableApps.com
119 SpeedCrunch alternatives
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 is the most popular Windows, Mac & Linux alternative to Windows Calculator.
- - SpeedCrunch is the most popular Open Source & free alternative to Windows Calculator.
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SpeedCrunch Features
1. Syntax HighlightingSpeedCrunch supports syntax highlighting for various programming and markup languages.
2. PortableSpeedCrunch can be used from a USB stick or similar with no prior installation.
3. Live PreviewInstantly see what your files and documents look like as you create them.
4. Ad-freeSpeedCrunch doesn't contain any form of external advertising.
5. Support for ThemesYou can use themes and templates to change the look and feel of SpeedCrunch.
Variables
Persistent History
Input history
Activity history
Multiple languages
Inline editing
Comments about SpeedCrunch as a Alternative to Windows Calculator
Most users think SpeedCrunch is a great Windows Calculator alternative.
Guest
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.
Top positive comment•
1

Guest
Clean and lots of keybinds for speed.
Top positive comment•
0

nickkiousis
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!
Positive comment•
0

Guest
It is simply, fast and functional, any problems with formulas. Good bye caculator of windows 10.
Positive comment•
5

Guest
It is like a good old copybook where you can write all formulas you need in "natural" way.
Positive comment•
1
Qalculate!
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Mac
Windows
Linux
110 Qalculate! alternatives
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).
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Qalculate! Features
1. Currency ConversionQalculate! lets you convert different currencies based on the latest exchange rates.
2. Works OfflineQalculate! can be used without the need to connect to the internet.
3. Ad-freeQalculate! doesn't contain any form of external advertising.
4. No registration requiredYou can use most of the features in Qalculate! without registration.
5. PortableQalculate! can be used from a USB stick or similar with no prior installation.
Unit converter
Graphing calculator
Persistent History
Natural Language Processing
Exchange rates
Variables
Periodic table
Hexadecimal
Equation solving
Reverse Polish notation (RPN)
Insect
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Mac
Windows
Linux
Online
Self-Hosted
62 Insect alternatives
High precision scientific calculator with full support for physical units (web and terminal versions).
- - Insect is the most popular Web-based & Self-Hosted alternative to Windows Calculator.
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Insect Features
1. Ad-freeInsect doesn't contain any form of external advertising.
2. No registration requiredYou can use most of the features in Insect without registration.
Web-Based
Unit converter
Console-based
OpenCalc
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Android
Android Tablet
F-Droid
58 OpenCalc alternatives
A simple and beautiful calculator for Android.
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OpenCalc Features
1. Ad-freeOpenCalc doesn't contain any form of external advertising.
2. LightweightOpenCalc consumes less device resources compared to similar apps.
3. PortableOpenCalc can be used from a USB stick or similar with no prior installation.
Material design
Comments about OpenCalc as a Alternative to Windows Calculator
pros, cons and recent comments
Marcus Holloway
This runs on Android, not Windows. Therefore, it is not a viable option for Windows Calculator.
Negative comment•
0
NaSC
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Linux
63 NaSC alternatives
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. Then you can plug those answers in to future equations and if that answer changes, so does the equations its...
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NaSC Features
Minimalistic
Intuitive Interface
Natural Language Processing
Simple Calculator
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Android
Android Tablet
F-Droid
85 Simple Calculator alternatives
A calculator with the basic functions and a customizable widget.
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Simple Calculator Features
1. Ad-freeSimple Calculator doesn't contain any form of external advertising.
Widgets
Image personalization
Customizable
GeoGebra Scientific Calculator
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Online
Android
iPhone
Android Tablet
iPad
118 GeoGebra Scientific Calculator alternatives
Free online scientific calculator from GeoGebra: perform calculations with fractions, statistics and exponential functions, logarithms, trigonometry and much more!
- - GeoGebra Scientific Calculator is the most popular iPhone & iPad alternative to Windows Calculator.
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GeoGebra Scientific Calculator Features
Math Solver
GNOME Calculator
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Linux
Linux Mobile
Flathub
GNOME
Flatpak
57 GNOME Calculator alternatives
Calculator is an application that solves mathematical equations and is suitable as a default application in a GNOME Desktop environment.
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GNOME Calculator Features
1. Ad-freeGNOME Calculator doesn't contain any form of external advertising.
2. LightweightGNOME Calculator consumes less device resources compared to similar apps.
History
Gtk
Comments about GNOME Calculator as a Alternative to Windows Calculator
pros, cons and recent comments
Guest
It is well-maintained by many contributors.
Positive comment•
-1
Kalk Calculator
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Linux
KDE
Linux Mobile
Flathub
Plasma Mobile
116 Kalk Calculator alternatives
Kalk is a convergent calculator application built with the Kirigami framework. Although it is mainly targeted for mobile Linux platforms, it can also be used on the desktop.
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Kalk Calculator Features
KDE
Giac/Xcas
Is this is a good alternative?
Yes
No
Free • Open Source
Calculator
Mac
Windows
Linux
41 Giac/Xcas alternatives
Giac/Xcas is a free computer algebra system for Windows, Mac OS X and Linux/Unix (license GPL3, for commercial dual-license contact us).
Giac/Xcas has no features, suggest some!