Awesome

<img src="logo.png" width="40"/> KCalc

Features

KCalc has everything you would expect from a scientific calculator, plus:

Trigonometric functions, logic operations and statistical calculations.
A results stack which enables convenient recall of previous calculation results.
Precision is user-definable.
The display allows cut and paste of numbers.
The display colors and font are configurable, aiding usability.
The use of key-bindings make it easy to use without a pointing device.

Get KCalc

<a href='https://flathub.org/apps/details/org.kde.kcalc'><img width='190px' alt='Download on Flathub' src='https://flathub.org/assets/badges/flathub-badge-en.svg'/></a> <a href='https://snapcraft.io/kcalc'><img width='190px' alt='Get it from the Snap Store' src='https://snapcraft.io/static/images/badges/en/snap-store-black.svg'/></a>

Useful links