KCalc

KCalc
	KCalc 2.0.2 (default view)
Developer(s)	Klaus Niederkrüger, Bernd Johannes Wuebben, The KDE Team
Stable release	2.6 / March 30, 2010
Repository	invent.kde.org/utilities/kcalc ;
Operating system	Unix-like
Type	Math, Calculator
License	GPL
Website	utils.kde.org

Kcalc is a calculator application integrated with the KDE-Desktop. In the default view it includes a number pad, buttons for adding, subtracting, multiplying, and dividing, brackets, memory keys, percent, reciprocal, factorial, square, square root, and x to the power of y buttons.

Additional buttons for scientific and engineering (trigonometric and logarithmic functions), statistics and logic functions can be enabled as needed. 6 additional buttons can be predefined with mathematical constants and physical constants or custom values. It is ideal for calculations involving varying bases.

Since version 2 (included in KDE 3.5) KCalc offers arbitrary precision.