How to install Qalculate in Ubuntu Linux?

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Qalculate is a free and open-source powerful calculator software that comes with advanced functionalities. It has an interactive GUI which is implemented using KDE or GTK+-2.0 and Glade XML.

Qalculate is useful for everyday needs as well as for scientific or more complex calculations. You can simply enter your expression and it displays the result in a separate display. It is a cross-platform application that means you can install it on Windows, Linux, macOS, etc.

In this article, I will discuss how to install Qalculate on Ubuntu Linux.

Features of Qalculate

The key features of Qalculate are –

  • Includes a large library of customizable functions
  • Unit calculation and conversion
  • Physical constants
  • Supports vector and matrices operations
  • Integrated periodic table
  • Base and currency conversion
  • Symbolic calculation (Derivation and integration)
  • Graph plotting using Gnuplot
  • Calculation history
  • Character encoding and bitwise operations, etc.

How to install Qalculate on Ubuntu

There are multiple ways by which you can install Qalculate on Ubuntu. Now follow one of the given methods to install it on your system.

Installing Qalculate from Ubuntu repository

Qalculate is available in the official repository of Ubuntu so you can download it either from Ubuntu Software or by using the apt command in your terminal.

Before you install a package make sure the apt package repository is up to date –

sudo apt update

Now use the following command to install Qalculate –

sudo apt install qalculate

Press y and then enter if it asks for your confirmation.

Installing Qalculate using Snap

Qalculate is also available on Snap store so you can install it by using the given command in your terminal –

sudo snap install qalculate

Installing Qalculate Flatpak package

Flatpak is another way of building, distributing, and running sandboxed desktop applications on a Linux system. To install a Flatpak package on a Ubuntu system first you need to install and configure Flatpak

To install Flatpak open your terminal and execute the given command –

sudo apt install flatpak -y

Next, add the Flathub repository by using the given command –

flatpak remote-add --if-not-exists flathub

Now use the given command to install the Qalculate Flatpak package –

sudo flatpak install flathub io.github.Qalculate

You can run the installed package by using –

flatpak run io.github.Qalculate

Open Qalculate in Ubuntu

After the installation of the package, you can launch this application from the Ubuntu activities dashboard. Search Qalculate and click on its icon when appears.

open Qalculate

The following images show the user interface of this application –

ui qalculate

Now you can perform your calculations here.

If you want to more about its usage you can follow its official documentation.


Qalculate is one of the best calculator applications available for the Linux system. I hope you have set up it successfully and are able to use it.

Now if you have a query or feedback then write us in the comments below.

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