Open your terminal () and use the following syntax to download any of the above: Update your list: sudo apt update Install the app: sudo apt install [app-name]

Originally designed for the KDE desktop, KCalc works perfectly on Ubuntu and offers a very traditional "handheld" calculator feel.

If you prefer using your keyboard over your mouse, SpeedCrunch is the fastest tool for the job. Speed and efficiency. Key Features: Auto-completion for functions and variables. Result history scrollback. High precision (up to 50 decimal places). How to Download: Command line: sudo apt install speedcrunch

This is arguably the most versatile desktop calculator available for Linux. It handles complex multi-step equations with ease. Students and power users. Key Features: Natural expression editing (type it as you see it). Symbolic calculation (simplifying fractions and variables). Extensive library of physical constants. How to Download: Command line: sudo apt install qalculate-gtk Also available in the Ubuntu Software Center. 3. SpeedCrunch

Users who want a classic scientific calculator UI. Key Features: Trigonometric and logical operations. Customizable fonts and colors. Statistical calculations. How to Download: Command line: sudo apt install kcalc 5. Scilab or GNU Octave

Most Ubuntu users already have this installed. It is clean, fast, and surprisingly capable. Daily tasks and basic algebra. Key Features: Financial, Programming, and Scientific modes. Currency and unit conversion built-in. Variable storage. How to Download: It’s likely already in your app drawer. To reinstall: sudo apt install gnome-calculator 2. Qalculate!